Update bionic kernel headers using update_all.py

Change-Id: I9c377436e9bf158e7236b3b7dcebf3e79fa961de
diff --git a/libc/kernel/arch-x86/asm/dma-mapping_32.h b/libc/kernel/arch-x86/asm/dma-mapping_32.h
index 974a60b..6b41adf 100644
--- a/libc/kernel/arch-x86/asm/dma-mapping_32.h
+++ b/libc/kernel/arch-x86/asm/dma-mapping_32.h
@@ -7,22 +7,27 @@
  ***   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_I386_DMA_MAPPING_H
 #define _ASM_I386_DMA_MAPPING_H
-
 #include <linux/mm.h>
 #include <linux/scatterlist.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/cache.h>
 #include <asm/io.h>
 #include <asm/bug.h>
-
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-
 #define dma_is_consistent(d, h) (1)
 #define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */