Audio: Add AUDIO_FORMAT_DRA

China DTMB digital TV.
See SJ/T11368-2006
“Specification for multichannel digital audio coding technology”.

Test: atest AudioFormatTest
Bug: 185950819
Merged-In: I941c4991e598e864babfb888a8827d1625d95990
Change-Id: I941c4991e598e864babfb888a8827d1625d95990
diff --git a/audio/7.0/config/api/current.txt b/audio/7.0/config/api/current.txt
index 3d3f6c3..c2585bd 100644
--- a/audio/7.0/config/api/current.txt
+++ b/audio/7.0/config/api/current.txt
@@ -210,6 +210,7 @@
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioFormat AUDIO_FORMAT_CELT;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioFormat AUDIO_FORMAT_DEFAULT;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioFormat AUDIO_FORMAT_DOLBY_TRUEHD;
+    enum_constant public static final android.audio.policy.configuration.V7_0.AudioFormat AUDIO_FORMAT_DRA;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioFormat AUDIO_FORMAT_DSD;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioFormat AUDIO_FORMAT_DTS;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioFormat AUDIO_FORMAT_DTS_HD;