Updated to v4.4.1 kernel headers.

Small modifications needed to allow compilation with the new headers:

- Manually modify bionic/libc/kernel/uapi/asm-mips/asm/siginfo.h to
  remove the uapi from the include.
- PR_XXX defines are now available for mips, so remove the definition
  from linker_mips.cpp.

Bug: 23789423
Change-Id: I6dc8a03b012426d3a937db15cb24d3a50fab5a8c
diff --git a/libc/kernel/uapi/linux/loop.h b/libc/kernel/uapi/linux/loop.h
index c0881f4..bc15421 100644
--- a/libc/kernel/uapi/linux/loop.h
+++ b/libc/kernel/uapi/linux/loop.h
@@ -26,71 +26,74 @@
   LO_FLAGS_AUTOCLEAR = 4,
   LO_FLAGS_PARTSCAN = 8,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  LO_FLAGS_DIRECT_IO = 16,
 };
 #include <asm/posix_types.h>
 #include <linux/types.h>
-struct loop_info {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct loop_info {
   int lo_number;
   __kernel_old_dev_t lo_device;
   unsigned long lo_inode;
-  __kernel_old_dev_t lo_rdevice;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __kernel_old_dev_t lo_rdevice;
   int lo_offset;
   int lo_encrypt_type;
   int lo_encrypt_key_size;
-  int lo_flags;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  int lo_flags;
   char lo_name[LO_NAME_SIZE];
   unsigned char lo_encrypt_key[LO_KEY_SIZE];
   unsigned long lo_init[2];
-  char reserved[4];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  char reserved[4];
 };
 struct loop_info64 {
   __u64 lo_device;
-  __u64 lo_inode;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u64 lo_inode;
   __u64 lo_rdevice;
   __u64 lo_offset;
   __u64 lo_sizelimit;
-  __u32 lo_number;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 lo_number;
   __u32 lo_encrypt_type;
   __u32 lo_encrypt_key_size;
   __u32 lo_flags;
-  __u8 lo_file_name[LO_NAME_SIZE];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u8 lo_file_name[LO_NAME_SIZE];
   __u8 lo_crypt_name[LO_NAME_SIZE];
   __u8 lo_encrypt_key[LO_KEY_SIZE];
   __u64 lo_init[2];
-};
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
 #define LO_CRYPT_NONE 0
 #define LO_CRYPT_XOR 1
 #define LO_CRYPT_DES 2
-#define LO_CRYPT_FISH2 3
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define LO_CRYPT_FISH2 3
 #define LO_CRYPT_BLOW 4
 #define LO_CRYPT_CAST128 5
 #define LO_CRYPT_IDEA 6
-#define LO_CRYPT_DUMMY 9
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define LO_CRYPT_DUMMY 9
 #define LO_CRYPT_SKIPJACK 10
 #define LO_CRYPT_CRYPTOAPI 18
 #define MAX_LO_CRYPT 20
-#define LOOP_SET_FD 0x4C00
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define LOOP_SET_FD 0x4C00
 #define LOOP_CLR_FD 0x4C01
 #define LOOP_SET_STATUS 0x4C02
 #define LOOP_GET_STATUS 0x4C03
-#define LOOP_SET_STATUS64 0x4C04
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define LOOP_SET_STATUS64 0x4C04
 #define LOOP_GET_STATUS64 0x4C05
 #define LOOP_CHANGE_FD 0x4C06
 #define LOOP_SET_CAPACITY 0x4C07
-#define LOOP_CTL_ADD 0x4C80
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define LOOP_SET_DIRECT_IO 0x4C08
+#define LOOP_CTL_ADD 0x4C80
 #define LOOP_CTL_REMOVE 0x4C81
 #define LOOP_CTL_GET_FREE 0x4C82
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif