Workaround for a gcc-4.6 bug on -fstrict-volatile-bitfields.

http://gcc.gnu.org/ml/gcc-patches/2011-03/msg01477.html
http://gcc.gnu.org/ml/gcc-patches/2011-11/msg01390.html

-fstrict-volatile-bitfields is set on by default on gcc-4.6
for ARM target. This causes an inline asm() error. While
upstream gcc community is working on the patch, we shut
off this option temporarily.

This patch does not affect gcc-4.4.3 build.

Change-Id: Id7016dc5856a516e10f2617232945034728a74ab

core/combo/TARGET_linux-arm.mk

@@ -119,7 +119,8 @@ TARGET_GLOBAL_CFLAGS += \
 # in gcc-4.4.x.  We also want to disable sincos optimization globally
 # by turning off the builtin sin function.
 ifneq ($(filter 4.6.%, $(shell $(TARGET_CC) --version)),)
-TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable -fno-builtin-sin
+TARGET_GLOBAL_CFLAGS += -Wno-unused-but-set-variable -fno-builtin-sin \
+			-fno-strict-volatile-bitfields
 endif
 
 # This is to avoid the dreaded warning compiler message: