Update to v4.15 kernel headers.

Test: Compiles, boots bullhead/hikey960.
Change-Id: I118beb8b6cac0881b1270f9bf6981959297a41a8
diff --git a/libc/kernel/uapi/linux/iso_fs.h b/libc/kernel/uapi/linux/iso_fs.h
index d88d646..8227031 100644
--- a/libc/kernel/uapi/linux/iso_fs.h
+++ b/libc/kernel/uapi/linux/iso_fs.h
@@ -22,34 +22,34 @@
 #include <linux/magic.h>
 #define ISODCL(from,to) (to - from + 1)
 struct iso_volume_descriptor {
-  char type[ISODCL(1, 1)];
+  __u8 type[ISODCL(1, 1)];
   char id[ISODCL(2, 6)];
-  char version[ISODCL(7, 7)];
-  char data[ISODCL(8, 2048)];
+  __u8 version[ISODCL(7, 7)];
+  __u8 data[ISODCL(8, 2048)];
 };
 #define ISO_VD_PRIMARY 1
 #define ISO_VD_SUPPLEMENTARY 2
 #define ISO_VD_END 255
 #define ISO_STANDARD_ID "CD001"
 struct iso_primary_descriptor {
-  char type[ISODCL(1, 1)];
+  __u8 type[ISODCL(1, 1)];
   char id[ISODCL(2, 6)];
-  char version[ISODCL(7, 7)];
-  char unused1[ISODCL(8, 8)];
+  __u8 version[ISODCL(7, 7)];
+  __u8 unused1[ISODCL(8, 8)];
   char system_id[ISODCL(9, 40)];
   char volume_id[ISODCL(41, 72)];
-  char unused2[ISODCL(73, 80)];
-  char volume_space_size[ISODCL(81, 88)];
-  char unused3[ISODCL(89, 120)];
-  char volume_set_size[ISODCL(121, 124)];
-  char volume_sequence_number[ISODCL(125, 128)];
-  char logical_block_size[ISODCL(129, 132)];
-  char path_table_size[ISODCL(133, 140)];
-  char type_l_path_table[ISODCL(141, 144)];
-  char opt_type_l_path_table[ISODCL(145, 148)];
-  char type_m_path_table[ISODCL(149, 152)];
-  char opt_type_m_path_table[ISODCL(153, 156)];
-  char root_directory_record[ISODCL(157, 190)];
+  __u8 unused2[ISODCL(73, 80)];
+  __u8 volume_space_size[ISODCL(81, 88)];
+  __u8 unused3[ISODCL(89, 120)];
+  __u8 volume_set_size[ISODCL(121, 124)];
+  __u8 volume_sequence_number[ISODCL(125, 128)];
+  __u8 logical_block_size[ISODCL(129, 132)];
+  __u8 path_table_size[ISODCL(133, 140)];
+  __u8 type_l_path_table[ISODCL(141, 144)];
+  __u8 opt_type_l_path_table[ISODCL(145, 148)];
+  __u8 type_m_path_table[ISODCL(149, 152)];
+  __u8 opt_type_m_path_table[ISODCL(153, 156)];
+  __u8 root_directory_record[ISODCL(157, 190)];
   char volume_set_id[ISODCL(191, 318)];
   char publisher_id[ISODCL(319, 446)];
   char preparer_id[ISODCL(447, 574)];
@@ -57,34 +57,34 @@
   char copyright_file_id[ISODCL(703, 739)];
   char abstract_file_id[ISODCL(740, 776)];
   char bibliographic_file_id[ISODCL(777, 813)];
-  char creation_date[ISODCL(814, 830)];
-  char modification_date[ISODCL(831, 847)];
-  char expiration_date[ISODCL(848, 864)];
-  char effective_date[ISODCL(865, 881)];
-  char file_structure_version[ISODCL(882, 882)];
-  char unused4[ISODCL(883, 883)];
-  char application_data[ISODCL(884, 1395)];
-  char unused5[ISODCL(1396, 2048)];
+  __u8 creation_date[ISODCL(814, 830)];
+  __u8 modification_date[ISODCL(831, 847)];
+  __u8 expiration_date[ISODCL(848, 864)];
+  __u8 effective_date[ISODCL(865, 881)];
+  __u8 file_structure_version[ISODCL(882, 882)];
+  __u8 unused4[ISODCL(883, 883)];
+  __u8 application_data[ISODCL(884, 1395)];
+  __u8 unused5[ISODCL(1396, 2048)];
 };
 struct iso_supplementary_descriptor {
-  char type[ISODCL(1, 1)];
+  __u8 type[ISODCL(1, 1)];
   char id[ISODCL(2, 6)];
-  char version[ISODCL(7, 7)];
-  char flags[ISODCL(8, 8)];
+  __u8 version[ISODCL(7, 7)];
+  __u8 flags[ISODCL(8, 8)];
   char system_id[ISODCL(9, 40)];
   char volume_id[ISODCL(41, 72)];
-  char unused2[ISODCL(73, 80)];
-  char volume_space_size[ISODCL(81, 88)];
-  char escape[ISODCL(89, 120)];
-  char volume_set_size[ISODCL(121, 124)];
-  char volume_sequence_number[ISODCL(125, 128)];
-  char logical_block_size[ISODCL(129, 132)];
-  char path_table_size[ISODCL(133, 140)];
-  char type_l_path_table[ISODCL(141, 144)];
-  char opt_type_l_path_table[ISODCL(145, 148)];
-  char type_m_path_table[ISODCL(149, 152)];
-  char opt_type_m_path_table[ISODCL(153, 156)];
-  char root_directory_record[ISODCL(157, 190)];
+  __u8 unused2[ISODCL(73, 80)];
+  __u8 volume_space_size[ISODCL(81, 88)];
+  __u8 escape[ISODCL(89, 120)];
+  __u8 volume_set_size[ISODCL(121, 124)];
+  __u8 volume_sequence_number[ISODCL(125, 128)];
+  __u8 logical_block_size[ISODCL(129, 132)];
+  __u8 path_table_size[ISODCL(133, 140)];
+  __u8 type_l_path_table[ISODCL(141, 144)];
+  __u8 opt_type_l_path_table[ISODCL(145, 148)];
+  __u8 type_m_path_table[ISODCL(149, 152)];
+  __u8 opt_type_m_path_table[ISODCL(153, 156)];
+  __u8 root_directory_record[ISODCL(157, 190)];
   char volume_set_id[ISODCL(191, 318)];
   char publisher_id[ISODCL(319, 446)];
   char preparer_id[ISODCL(447, 574)];
@@ -92,59 +92,59 @@
   char copyright_file_id[ISODCL(703, 739)];
   char abstract_file_id[ISODCL(740, 776)];
   char bibliographic_file_id[ISODCL(777, 813)];
-  char creation_date[ISODCL(814, 830)];
-  char modification_date[ISODCL(831, 847)];
-  char expiration_date[ISODCL(848, 864)];
-  char effective_date[ISODCL(865, 881)];
-  char file_structure_version[ISODCL(882, 882)];
-  char unused4[ISODCL(883, 883)];
-  char application_data[ISODCL(884, 1395)];
-  char unused5[ISODCL(1396, 2048)];
+  __u8 creation_date[ISODCL(814, 830)];
+  __u8 modification_date[ISODCL(831, 847)];
+  __u8 expiration_date[ISODCL(848, 864)];
+  __u8 effective_date[ISODCL(865, 881)];
+  __u8 file_structure_version[ISODCL(882, 882)];
+  __u8 unused4[ISODCL(883, 883)];
+  __u8 application_data[ISODCL(884, 1395)];
+  __u8 unused5[ISODCL(1396, 2048)];
 };
 #define HS_STANDARD_ID "CDROM"
 struct hs_volume_descriptor {
-  char foo[ISODCL(1, 8)];
-  char type[ISODCL(9, 9)];
+  __u8 foo[ISODCL(1, 8)];
+  __u8 type[ISODCL(9, 9)];
   char id[ISODCL(10, 14)];
-  char version[ISODCL(15, 15)];
-  char data[ISODCL(16, 2048)];
+  __u8 version[ISODCL(15, 15)];
+  __u8 data[ISODCL(16, 2048)];
 };
 struct hs_primary_descriptor {
-  char foo[ISODCL(1, 8)];
-  char type[ISODCL(9, 9)];
-  char id[ISODCL(10, 14)];
-  char version[ISODCL(15, 15)];
-  char unused1[ISODCL(16, 16)];
+  __u8 foo[ISODCL(1, 8)];
+  __u8 type[ISODCL(9, 9)];
+  __u8 id[ISODCL(10, 14)];
+  __u8 version[ISODCL(15, 15)];
+  __u8 unused1[ISODCL(16, 16)];
   char system_id[ISODCL(17, 48)];
   char volume_id[ISODCL(49, 80)];
-  char unused2[ISODCL(81, 88)];
-  char volume_space_size[ISODCL(89, 96)];
-  char unused3[ISODCL(97, 128)];
-  char volume_set_size[ISODCL(129, 132)];
-  char volume_sequence_number[ISODCL(133, 136)];
-  char logical_block_size[ISODCL(137, 140)];
-  char path_table_size[ISODCL(141, 148)];
-  char type_l_path_table[ISODCL(149, 152)];
-  char unused4[ISODCL(153, 180)];
-  char root_directory_record[ISODCL(181, 214)];
+  __u8 unused2[ISODCL(81, 88)];
+  __u8 volume_space_size[ISODCL(89, 96)];
+  __u8 unused3[ISODCL(97, 128)];
+  __u8 volume_set_size[ISODCL(129, 132)];
+  __u8 volume_sequence_number[ISODCL(133, 136)];
+  __u8 logical_block_size[ISODCL(137, 140)];
+  __u8 path_table_size[ISODCL(141, 148)];
+  __u8 type_l_path_table[ISODCL(149, 152)];
+  __u8 unused4[ISODCL(153, 180)];
+  __u8 root_directory_record[ISODCL(181, 214)];
 };
 struct iso_path_table {
-  unsigned char name_len[2];
-  char extent[4];
-  char parent[2];
+  __u8 name_len[2];
+  __u8 extent[4];
+  __u8 parent[2];
   char name[0];
 } __attribute__((packed));
 struct iso_directory_record {
-  char length[ISODCL(1, 1)];
-  char ext_attr_length[ISODCL(2, 2)];
-  char extent[ISODCL(3, 10)];
-  char size[ISODCL(11, 18)];
-  char date[ISODCL(19, 25)];
-  char flags[ISODCL(26, 26)];
-  char file_unit_size[ISODCL(27, 27)];
-  char interleave[ISODCL(28, 28)];
-  char volume_sequence_number[ISODCL(29, 32)];
-  unsigned char name_len[ISODCL(33, 33)];
+  __u8 length[ISODCL(1, 1)];
+  __u8 ext_attr_length[ISODCL(2, 2)];
+  __u8 extent[ISODCL(3, 10)];
+  __u8 size[ISODCL(11, 18)];
+  __u8 date[ISODCL(19, 25)];
+  __u8 flags[ISODCL(26, 26)];
+  __u8 file_unit_size[ISODCL(27, 27)];
+  __u8 interleave[ISODCL(28, 28)];
+  __u8 volume_sequence_number[ISODCL(29, 32)];
+  __u8 name_len[ISODCL(33, 33)];
   char name[0];
 } __attribute__((packed));
 #define ISOFS_BLOCK_BITS 11