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-mips/asm/auxvec.h b/libc/kernel/uapi/asm-mips/asm/auxvec.h
index 0c04901..2fa0e6b 100644
--- a/libc/kernel/uapi/asm-mips/asm/auxvec.h
+++ b/libc/kernel/uapi/asm-mips/asm/auxvec.h
@@ -16,6 +16,4 @@
  ***
  ****************************************************************************
  ****************************************************************************/
-#ifndef _ASM_AUXVEC_H
-#define _ASM_AUXVEC_H
-#endif
+#include <asm-generic/auxvec.h>