Audio: Add routing option between HDMI speakers and device speakers

Add option that routing  between HDMI audio output and device audio
output, when HDMI is connected.

Change-Id: I9bbe9b1cbee5b6659502dae386c086f37bef2120
diff --git a/policy_hal/Android.mk b/policy_hal/Android.mk
index c68ab6e..4f3a737 100644
--- a/policy_hal/Android.mk
+++ b/policy_hal/Android.mk
@@ -29,6 +29,9 @@
 ifneq ($(strip $(AUDIO_FEATURE_DISABLED_INCALL_MUSIC)),true)
 LOCAL_CFLAGS += -DAUDIO_EXTN_INCALL_MUSIC_ENABLED
 endif
+ifneq ($(strip $(AUDIO_FEATURE_DISABLED_HDMI_SPK)),true)
+LOCAL_CFLAGS += -DAUDIO_EXTN_HDMI_SPK_ENABLED
+endif
 
 
 ifeq ($(strip $(TARGET_BOARD_PLATFORM)),msm8916)