arm: omap2: enable smc instruction for sleep34xx

This fixes broken build when using binutils 2.21.
Signed-off-by: NOskar Andero <oskar.andero@sonyericsson.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/Makefile

@@ -68,7 +68,7 @@ obj-$(CONFIG_OMAP_SMARTREFLEX)          += sr_device.o smartreflex.o
 obj-$(CONFIG_OMAP_SMARTREFLEX_CLASS3)	+= smartreflex-class3.o
 
 AFLAGS_sleep24xx.o			:=-Wa,-march=armv6
-AFLAGS_sleep34xx.o			:=-Wa,-march=armv7-a
+AFLAGS_sleep34xx.o			:=-Wa,-march=armv7-a$(plus_sec)
 
 ifeq ($(CONFIG_PM_VERBOSE),y)
 CFLAGS_pm_bus.o				+= -DDEBUG