audio: Enable External HDMI support

-For HDMI compliance, channel status bits
should be configured for the external HDMI chip.
-Hence HAL based on the output format i.e compressed
or LPCM populates the channel_status information
and passes it to the dai-driver which in turn
configures the external HDMI chip.

Change-Id: Ibf192492d259a722070a08f4764fde9498dd268d
diff --git a/hal/audio_hw.h b/hal/audio_hw.h
index 67f5279..45e90b7 100644
--- a/hal/audio_hw.h
+++ b/hal/audio_hw.h
@@ -311,6 +311,7 @@
     int snd_card;
     unsigned int cur_codec_backend_samplerate;
     unsigned int cur_codec_backend_bit_width;
+    bool mChannelStatusSet;
     void *platform;
     unsigned int offload_usecases_state;
     void *visualizer_lib;