docbook: fix errors from x86 headers merger

Fix docbook errors for x86 headers that were recently merged:

docproc: arch/x86/include/asm/atomic_32.h: No such file or directory
docproc: arch/x86/include/asm/io_32.h: No such file or directory

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/Documentation/DocBook/device-drivers.tmpl b/Documentation/DocBook/device-drivers.tmpl
index f9a6e2c..1b2dd4f 100644
--- a/Documentation/DocBook/device-drivers.tmpl
+++ b/Documentation/DocBook/device-drivers.tmpl
@@ -45,7 +45,7 @@
      </sect1>
 
      <sect1><title>Atomic and pointer manipulation</title>
-!Iarch/x86/include/asm/atomic_32.h
+!Iarch/x86/include/asm/atomic.h
 !Iarch/x86/include/asm/unaligned.h
      </sect1>