hal: Add support for IEC61937 HDMI pass-through

Add IEC61937 format for apq8098 compress pass-through.

Change-Id: I958509a7f7ab856092756e91e5e7f2eefeb70809
diff --git a/hal/audio_extn/utils.c b/hal/audio_extn/utils.c
index 38cfe35..e22cd1f 100644
--- a/hal/audio_extn/utils.c
+++ b/hal/audio_extn/utils.c
@@ -143,6 +143,7 @@
     STRING_TO_ENUM(AUDIO_FORMAT_DTS),
     STRING_TO_ENUM(AUDIO_FORMAT_DTS_HD),
     STRING_TO_ENUM(AUDIO_FORMAT_DOLBY_TRUEHD),
+    STRING_TO_ENUM(AUDIO_FORMAT_IEC61937),
 #ifdef AUDIO_EXTN_FORMATS_ENABLED
     STRING_TO_ENUM(AUDIO_FORMAT_E_AC3_JOC),
     STRING_TO_ENUM(AUDIO_FORMAT_WMA),
@@ -1266,6 +1267,9 @@
     case AUDIO_FORMAT_DOLBY_TRUEHD:
         id = SND_AUDIOCODEC_TRUEHD;
         break;
+    case AUDIO_FORMAT_IEC61937:
+        id = SND_AUDIOCODEC_IEC61937;
+        break;
     case AUDIO_FORMAT_DSD:
         id = SND_AUDIOCODEC_DSD;
         break;