[PATCH] CHECKFLAGS on ppc64 got broken

Now that asm-powerpc/* is using ifdefs on __powerpc64__ we need to add it
to CHECKFLAGS on ppc64.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/ppc64/Makefile b/arch/ppc64/Makefile
index 6350cce..8189953 100644
--- a/arch/ppc64/Makefile
+++ b/arch/ppc64/Makefile
@@ -49,7 +49,7 @@
 
 endif
 
-CHECKFLAGS	+= -m64 -D__powerpc__
+CHECKFLAGS	+= -m64 -D__powerpc__ -D__powerpc64__
 
 LDFLAGS		:= -m elf64ppc
 LDFLAGS_vmlinux	:= -Bstatic -e $(KERNELLOAD) -Ttext $(KERNELLOAD)