[ARM PATCH] 2012/1: Use -malignment-traps instead of -mshort-load-bytes if gcc supports it

Patch from Catalin Marinas

This patch replaces the -mshort-load-bytes option with $(call
check_gcc,-malignment-traps,-mshort-load-bytes) in the CFLAGS
setting in arch/arm/Makefile.

arch/arm/Makefile

@@ -55,7 +55,7 @@ tune-$(CONFIG_CPU_XSCALE)	:=$(call check_gcc,-mtune=xscale,-mtune=strongarm110)
 tune-$(CONFIG_CPU_V6)		:=-mtune=strongarm
 
 # Need -Uarm for gcc < 3.x
-CFLAGS		+=-mapcs-32 $(arch-y) $(tune-y) -mshort-load-bytes -msoft-float -Wa,-mno-fpu -Uarm
+CFLAGS		+=-mapcs-32 $(arch-y) $(tune-y) $(call check_gcc,-malignment-traps,-mshort-load-bytes) -msoft-float -Wa,-mno-fpu -Uarm
 AFLAGS		+=-mapcs-32 $(arch-y) $(tune-y) -msoft-float -Wa,-mno-fpu
 
 CHECK		:= $(CHECK) -D__arm__=1