Update bionic kernel headers using update_all.py

Change-Id: I9c377436e9bf158e7236b3b7dcebf3e79fa961de
diff --git a/libc/kernel/arch-x86/asm/dwarf2_32.h b/libc/kernel/arch-x86/asm/dwarf2_32.h
index a2dc3f1..0ec1650 100644
--- a/libc/kernel/arch-x86/asm/dwarf2_32.h
+++ b/libc/kernel/arch-x86/asm/dwarf2_32.h
@@ -7,27 +7,37 @@
  ***   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 _DWARF2_H
 #define _DWARF2_H
-
 #ifndef __ASSEMBLY__
 #warning "asm/dwarf2.h should be only included in pure assembly files"
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
 #define CFI_STARTPROC ignore
 #define CFI_ENDPROC ignore
 #define CFI_DEF_CFA ignore
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CFI_DEF_CFA_REGISTER ignore
 #define CFI_DEF_CFA_OFFSET ignore
 #define CFI_ADJUST_CFA_OFFSET ignore
 #define CFI_OFFSET ignore
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CFI_REL_OFFSET ignore
 #define CFI_REGISTER ignore
 #define CFI_RESTORE ignore
 #define CFI_REMEMBER_STATE ignore
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CFI_RESTORE_STATE ignore
 #define CFI_UNDEFINED ignore
 #define CFI_SIGNAL_FRAME ignore
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */