Update bionic kernel headers using update_all.py

Change-Id: I4da6b23cdbce89445f1ca5d2fadeb23345ce694c
diff --git a/libc/kernel/common/asm-generic/bitops/non-atomic.h b/libc/kernel/common/asm-generic/bitops/non-atomic.h
index 727f736..5f2866e 100644
--- a/libc/kernel/common/asm-generic/bitops/non-atomic.h
+++ b/libc/kernel/common/asm-generic/bitops/non-atomic.h
@@ -7,14 +7,19 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _ASM_GENERIC_BITOPS_NON_ATOMIC_H_
 #define _ASM_GENERIC_BITOPS_NON_ATOMIC_H_
-
 #include <asm/types.h>
-
 #define BITOP_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
-
 #endif