audio: Add AUDIO_CHANNEL_OUT_13POINT_360RA constant

13ch audio constant for 360 Reality Audio.

The enum value is added in system/media/audio/audio-hal-enums.h.
 - Define the same enum to HALv7.
 - Set 13 for the layout from getChannelCount().

Bug: 185100731
Test: Use the value on audio hal and build.
Test: Use the value on audio_policy_configuration.xml and build.
Test: atest android.hardware.audio.common@7.0-util_tests
Change-Id: Ifa37f9be96a94c623e5d4164774c39d05efbbb8b
diff --git a/audio/7.0/config/api/current.txt b/audio/7.0/config/api/current.txt
index eb8c2dd..d4be9ae 100644
--- a/audio/7.0/config/api/current.txt
+++ b/audio/7.0/config/api/current.txt
@@ -45,6 +45,7 @@
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioChannelMask AUDIO_CHANNEL_IN_VOICE_DNLINK_MONO;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioChannelMask AUDIO_CHANNEL_IN_VOICE_UPLINK_MONO;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioChannelMask AUDIO_CHANNEL_NONE;
+    enum_constant public static final android.audio.policy.configuration.V7_0.AudioChannelMask AUDIO_CHANNEL_OUT_13POINT_360RA;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioChannelMask AUDIO_CHANNEL_OUT_2POINT0POINT2;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioChannelMask AUDIO_CHANNEL_OUT_2POINT1;
     enum_constant public static final android.audio.policy.configuration.V7_0.AudioChannelMask AUDIO_CHANNEL_OUT_2POINT1POINT2;