[PATCH] S390: fix implicit declaration of (un)likely.

include/asm/atomic.h:94: warning: implicit declaration of function 'unlikely'
include/asm/atomic.h:97: warning: implicit declaration of function 'likely'
Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-s390/atomic.h

 #ifndef __ARCH_S390_ATOMIC__
 #define __ARCH_S390_ATOMIC__
 
+#include <linux/compiler.h>
+
 /*
  *  include/asm-s390/atomic.h
  *