audio: config audio backend for HDMI playback

-check EDID info for supported audio configuration,
 and config audio backend for HDMI audio playback
 with proper bitwidth and sample rate.

Change-Id: Iae65e00b0f4d2f74f303ef03610f8b3a098dc7aa
diff --git a/hal/edid.h b/hal/edid.h
index 0d7fbe6..387b17e 100644
--- a/hal/edid.h
+++ b/hal/edid.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014, 2016, The Linux Foundation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -97,4 +97,8 @@
 #else
 bool edid_get_sink_caps(edid_audio_info* info, char *edid_data);
 #endif
+
+bool edid_is_supported_sr(edid_audio_info* info, int sr);
+bool edid_is_supported_bps(edid_audio_info* info, int bps);
+
 #endif /* EDID_H */