[poky] [PATCH 2/2] OMAP4: enable smc instruction in new assembler versions

From: John Rigby <john.rigby at linaro.org>

New assemblers need -march=armv7-a+sec on command line or
.arch_extension sec inline to enable use of the smc instruction.

This patch uses as-instr to check the latter to conditionally
enable the former in AFLAGS for files that use smc.

Checked on both old and new binutils to verify that it does
not break old versions.

Signed-off-by: John Rigby <john.rigby at linaro.org>
Signed-off-by: Tony Lindgren <tony at atomide.com>
---
 arch/arm/mach-omap2/Makefile |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 60e51bc..ee9ef4f 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -26,8 +26,9 @@ obj-$(CONFIG_LOCAL_TIMERS)		+= timer-mpu.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= omap-hotplug.o
 obj-$(CONFIG_ARCH_OMAP4)		+= omap44xx-smc.o omap4-common.o
 
-AFLAGS_omap-headsmp.o			:=-Wa,-march=armv7-a
-AFLAGS_omap44xx-smc.o			:=-Wa,-march=armv7-a
+plus_sec := $(call as-instr,.arch_extension sec,+sec)
+AFLAGS_omap-headsmp.o			:=-Wa,-march=armv7-a$(plus_sec)
+AFLAGS_omap44xx-smc.o			:=-Wa,-march=armv7-a$(plus_sec)
 
 # Functions loaded to SRAM
 obj-$(CONFIG_ARCH_OMAP2420)		+= sram242x.o
-- 
1.7.1