[PATCH] ppc64: remove extra whitespace before preprocessor token

unifdef complains about the space before #ifndef.
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-ppc64/io.h

- #ifndef _PPC64_IO_H
+#ifndef _PPC64_IO_H
 #define _PPC64_IO_H
 
 /*