[PATCH] ARM: EXYNOS: fix build error in platsmp.c

[Arnd Bergmann]

/tmp/ccYeWL3V.s: Assembler messages:
/tmp/ccYeWL3V.s:659: Error: selected processor does not support ARM mode `isb '
/tmp/ccYeWL3V.s:664: Error: selected processor does not support ARM mode `isb '
/tmp/ccYeWL3V.s:665: Error: selected processor does not support ARM mode `dsb '
make[3]: *** [arch/arm/mach-exynos/platsmp.o] Error 1

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Fixes: 17342534e1d932 ("ARM: EXYNOS: Move code from hotplug.c to platsmp.c")

diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 4e49d4efb264..64324bf5edb4 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_PM_SLEEP)		+= suspend.o
 obj-$(CONFIG_PM_GENERIC_DOMAINS) += pm_domains.o
 
 obj-$(CONFIG_SMP)		+= platsmp.o headsmp.o
+CFLAGS_platsmp.o		:= -march=armv7-a
 
 plus_sec := $(call as-instr,.arch_extension sec,+sec)
 AFLAGS_exynos-smc.o		:=-Wa,-march=armv7-a$(plus_sec)
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