Update bionic kernel headers using update_all.py

Change-Id: I9c377436e9bf158e7236b3b7dcebf3e79fa961de
diff --git a/libc/kernel/arch-x86/asm/atomic_32.h b/libc/kernel/arch-x86/asm/atomic_32.h
index 677aac8..355b620 100644
--- a/libc/kernel/arch-x86/asm/atomic_32.h
+++ b/libc/kernel/arch-x86/asm/atomic_32.h
@@ -7,33 +7,39 @@
  ***   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 __ARCH_I386_ATOMIC__
 #define __ARCH_I386_ATOMIC__
-
 #include <linux/compiler.h>
 #include <asm/processor.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/cmpxchg.h>
-
 typedef struct { int counter; } atomic_t;
-
 #define ATOMIC_INIT(i) { (i) }
-
 #define atomic_read(v) ((v)->counter)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define atomic_set(v,i) (((v)->counter) = (i))
-
 #define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
 #define atomic_xchg(v, new) (xchg(&((v)->counter), (new)))
 #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define atomic_inc_return(v) (atomic_add_return(1,v))
 #define atomic_dec_return(v) (atomic_sub_return(1,v))
 #define atomic_clear_mask(mask, addr)  __asm__ __volatile__(LOCK_PREFIX "andl %0,%1"  : : "r" (~(mask)),"m" (*addr) : "memory")
 #define atomic_set_mask(mask, addr)  __asm__ __volatile__(LOCK_PREFIX "orl %0,%1"  : : "r" (mask),"m" (*(addr)) : "memory")
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define smp_mb__before_atomic_dec() barrier()
 #define smp_mb__after_atomic_dec() barrier()
 #define smp_mb__before_atomic_inc() barrier()
 #define smp_mb__after_atomic_inc() barrier()
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm-generic/atomic.h>
 #endif