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/linux/sched.h b/libc/kernel/uapi/linux/sched.h
index c7542e8..d87bc2a 100644
--- a/libc/kernel/uapi/linux/sched.h
+++ b/libc/kernel/uapi/linux/sched.h
@@ -53,6 +53,8 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SCHED_BATCH 3
 #define SCHED_IDLE 5
+#define SCHED_DEADLINE 6
 #define SCHED_RESET_ON_FORK 0x40000000
-#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SCHED_FLAG_RESET_ON_FORK 0x01
+#endif