Update kernel uapi headers to v3.16.1.

Other changes to support the new headers:

- Remove the flock64 structure it is defined in the new headers.
- Update the syscalls to correspond with the headers.

Change-Id: I49a6b07e8b2bfffb67be71b07b58e4e6848fcc09
diff --git a/libc/kernel/uapi/linux/prctl.h b/libc/kernel/uapi/linux/prctl.h
index a127b5a..bf077fa 100644
--- a/libc/kernel/uapi/linux/prctl.h
+++ b/libc/kernel/uapi/linux/prctl.h
@@ -117,4 +117,7 @@
 #define PR_GET_NO_NEW_PRIVS 39
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PR_GET_TID_ADDRESS 40
+#define PR_SET_THP_DISABLE 41
+#define PR_GET_THP_DISABLE 42
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */