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/ashmem.h b/libc/kernel/uapi/linux/ashmem.h
index 4711ef3..62ed37e 100644
--- a/libc/kernel/uapi/linux/ashmem.h
+++ b/libc/kernel/uapi/linux/ashmem.h
@@ -19,31 +19,32 @@
 #ifndef _UAPI_LINUX_ASHMEM_H
 #define _UAPI_LINUX_ASHMEM_H
 #include <linux/ioctl.h>
-#define ASHMEM_NAME_LEN 256
+#include <linux/types.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ASHMEM_NAME_LEN 256
 #define ASHMEM_NAME_DEF "dev/ashmem"
 #define ASHMEM_NOT_PURGED 0
 #define ASHMEM_WAS_PURGED 1
-#define ASHMEM_IS_UNPINNED 0
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ASHMEM_IS_UNPINNED 0
 #define ASHMEM_IS_PINNED 1
 struct ashmem_pin {
   __u32 offset;
-  __u32 len;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u32 len;
 };
 #define __ASHMEMIOC 0x77
 #define ASHMEM_SET_NAME _IOW(__ASHMEMIOC, 1, char[ASHMEM_NAME_LEN])
-#define ASHMEM_GET_NAME _IOR(__ASHMEMIOC, 2, char[ASHMEM_NAME_LEN])
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ASHMEM_GET_NAME _IOR(__ASHMEMIOC, 2, char[ASHMEM_NAME_LEN])
 #define ASHMEM_SET_SIZE _IOW(__ASHMEMIOC, 3, size_t)
 #define ASHMEM_GET_SIZE _IO(__ASHMEMIOC, 4)
 #define ASHMEM_SET_PROT_MASK _IOW(__ASHMEMIOC, 5, unsigned long)
-#define ASHMEM_GET_PROT_MASK _IO(__ASHMEMIOC, 6)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ASHMEM_GET_PROT_MASK _IO(__ASHMEMIOC, 6)
 #define ASHMEM_PIN _IOW(__ASHMEMIOC, 7, struct ashmem_pin)
 #define ASHMEM_UNPIN _IOW(__ASHMEMIOC, 8, struct ashmem_pin)
 #define ASHMEM_GET_PIN_STATUS _IO(__ASHMEMIOC, 9)
-#define ASHMEM_PURGE_ALL_CACHES _IO(__ASHMEMIOC, 10)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ASHMEM_PURGE_ALL_CACHES _IO(__ASHMEMIOC, 10)
 #endif