Update kernel headers to v3.14.

Other changes:
- Modify update_all.py to skip ion header files when importing into aosp.
- Fix generate_uapi_headers.sh to handle imports from a linux-stable kernel.

Change-Id: I1ad81b9ccb063c21740f9875f2cc1238052cd4b3
diff --git a/libc/kernel/uapi/asm-arm64/asm/byteorder.h b/libc/kernel/uapi/asm-arm64/asm/byteorder.h
index 1908aa6..92b1d48 100644
--- a/libc/kernel/uapi/asm-arm64/asm/byteorder.h
+++ b/libc/kernel/uapi/asm-arm64/asm/byteorder.h
@@ -18,6 +18,11 @@
  ****************************************************************************/
 #ifndef __ASM_BYTEORDER_H
 #define __ASM_BYTEORDER_H
+#ifdef __AARCH64EB__
+#include <linux/byteorder/big_endian.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#else
 #include <linux/byteorder/little_endian.h>
 #endif
+#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */