[PATCH] Fix cc-option call for xcompiles

If an arch Makefile overrides CROSS_COMPILE (e.g. parisc, mips, ...)
then the cc-option call in the main Makefile uses the wrong compiler 
to check for options.
Signed-off-by: Randolph Chung <tausq@debian.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Makefile

@@ -520,11 +520,11 @@ ifdef CONFIG_DEBUG_INFO
 CFLAGS		+= -g
 endif
 
+include $(srctree)/arch/$(ARCH)/Makefile
+
 # warn about C99 declaration after statement
 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
 
-include $(srctree)/arch/$(ARCH)/Makefile
-
 # Default kernel image to build when no specific target is given.
 # KBUILD_IMAGE may be overruled on the commandline or
 # set in the environment