Add no-macro-redefined CFLAG

Change-Id: I555cf2a183e1a7bcbccd31e88308cfcaa30d2dc3
diff --git a/hal/Android.mk b/hal/Android.mk
index 5d85a2c..96d4c6b 100644
--- a/hal/Android.mk
+++ b/hal/Android.mk
@@ -56,6 +56,8 @@
 endif
 endif
 
+LOCAL_CFLAGS += -Wno-macro-redefined
+
 LOCAL_SRC_FILES := \
 	audio_hw.c \
 	voice.c \