Update to kernel headers v4.7.2.

Modify the kernel header update script to rename C++ keyword
struct members to something else. This fixes problems when including
these kernel files in C++ code.

Also, make a manual change to linux/fib_rules.h and comment out the
value FRA_PAD since it conflicts with a special android kernel value
FRA_UID_START that has not been upstreamed yet.

Test: Built aosp_angler, aosp_x86_64, aosp_mips (bionic only)
Test: Booted on angler and ran bionic unit tests
Test: Built these changes in internal master

Change-Id: Ia22b7e3ca409404696dba76311f49157f4a9ceed
diff --git a/libc/kernel/uapi/linux/elf-em.h b/libc/kernel/uapi/linux/elf-em.h
index 1e372fa..df446d5 100644
--- a/libc/kernel/uapi/linux/elf-em.h
+++ b/libc/kernel/uapi/linux/elf-em.h
@@ -48,27 +48,24 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EM_S390 22
 #define EM_CRIS 76
-#define EM_V850 87
 #define EM_M32R 88
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EM_MN10300 89
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EM_OPENRISC 92
 #define EM_BLACKFIN 106
 #define EM_ALTERA_NIOS2 113
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EM_TI_C6000 140
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EM_AARCH64 183
 #define EM_TILEPRO 188
 #define EM_MICROBLAZE 189
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EM_TILEGX 191
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EM_FRV 0x5441
 #define EM_AVR32 0x18ad
 #define EM_ALPHA 0x9026
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define EM_CYGNUS_V850 0x9080
 #define EM_CYGNUS_M32R 0x9041
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EM_S390_OLD 0xA390
 #define EM_CYGNUS_MN10300 0xbeef
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif