[PATCH] missing CHECKFLAGS on s390

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/s390/Makefile

@@ -19,6 +19,7 @@ CFLAGS		+= -m31
 AFLAGS		+= -m31
 UTS_MACHINE	:= s390
 STACK_SIZE	:= 8192
+CHECKFLAGS	+= -D__s390__
 endif
 
 ifdef CONFIG_ARCH_S390X
@@ -28,6 +29,7 @@ CFLAGS		+= -m64
 AFLAGS		+= -m64
 UTS_MACHINE	:= s390x
 STACK_SIZE	:= 16384
+CHECKFLAGS	+= -D__s390__ -D__s390x__
 endif
 
 cflags-$(CONFIG_MARCH_G5)   += $(call cc-option,-march=g5)