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/kvm_para.h b/libc/kernel/uapi/linux/kvm_para.h
index ab01e69..d973996 100644
--- a/libc/kernel/uapi/linux/kvm_para.h
+++ b/libc/kernel/uapi/linux/kvm_para.h
@@ -28,6 +28,7 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define KVM_HC_FEATURES 3
 #define KVM_HC_PPC_MAP_MAGIC_PAGE 4
+#define KVM_HC_KICK_CPU 5
 #include <asm/kvm_para.h>
-#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif