pandaboard: Fix TARGET_EXTRA_CFLAGS

Passing the quotation marks causes the test command to be
arm-linux-androideabi-gcc "-march=arm-v7a -mcpu=cortex-a9"
Causing gcc to think the flag is -march="armv7a -mcpu=cortex-a9",
which is invalid ==> flags were never added

Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
diff --git a/BoardConfig.mk b/BoardConfig.mk
index bb8fdd7..c79a542 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -65,7 +65,7 @@
 USE_OPENGL_RENDERER := true
 
 # PandaBoard uses an OMAP4 -- Cortex A9
-TARGET_EXTRA_CFLAGS += $(call cc-option,"-march=armv7-a -mtune=cortex-a9",$(call cc-option,"-march=armv7-a -mtune=cortex-a8")) $(call cc-option,"-march=armv7-a -mcpu=cortex-a9",$(call cc-option,"-march=armv7-a -mcpu=cortex-a8"))
+TARGET_EXTRA_CFLAGS += $(call cc-option,-march=armv7-a -mtune=cortex-a9,$(call cc-option,-march=armv7-a -mtune=cortex-a8)) $(call cc-option,-march=armv7-a -mcpu=cortex-a9,$(call cc-option,-march=armv7-a -mcpu=cortex-a8))
 
 # ARMs gator (DS-5)
 TARGET_USE_GATOR:= true