Add audio device type MULTICHANNEL_GROUP

Add audio device type MULTICHANNEL_GROUP for wireless speaker group
supporting multichannel content.

Flag: android.media.audio.enable_multichannel_group_device
Bug: 344031109
Test: atest CtsMediaAudioTestCases
Change-Id: If9ad55bd991f060c308dd128be489b51557a99e3
diff --git a/audio/aidl/default/config/audioPolicy/api/current.txt b/audio/aidl/default/config/audioPolicy/api/current.txt
index e57c108..7fce8fb 100644
--- a/audio/aidl/default/config/audioPolicy/api/current.txt
+++ b/audio/aidl/default/config/audioPolicy/api/current.txt
@@ -144,6 +144,7 @@
     enum_constant public static final android.audio.policy.configuration.AudioDevice AUDIO_DEVICE_OUT_HEARING_AID;
     enum_constant public static final android.audio.policy.configuration.AudioDevice AUDIO_DEVICE_OUT_IP;
     enum_constant public static final android.audio.policy.configuration.AudioDevice AUDIO_DEVICE_OUT_LINE;
+    enum_constant public static final android.audio.policy.configuration.AudioDevice AUDIO_DEVICE_OUT_MULTICHANNEL_GROUP;
     enum_constant public static final android.audio.policy.configuration.AudioDevice AUDIO_DEVICE_OUT_PROXY;
     enum_constant public static final android.audio.policy.configuration.AudioDevice AUDIO_DEVICE_OUT_REMOTE_SUBMIX;
     enum_constant public static final android.audio.policy.configuration.AudioDevice AUDIO_DEVICE_OUT_SPDIF;
diff --git a/audio/aidl/default/config/audioPolicy/audio_policy_configuration.xsd b/audio/aidl/default/config/audioPolicy/audio_policy_configuration.xsd
index 108a6a3..1f90313 100644
--- a/audio/aidl/default/config/audioPolicy/audio_policy_configuration.xsd
+++ b/audio/aidl/default/config/audioPolicy/audio_policy_configuration.xsd
@@ -262,6 +262,7 @@
             <xs:enumeration value="AUDIO_DEVICE_OUT_AUX_LINE"/>
             <xs:enumeration value="AUDIO_DEVICE_OUT_SPEAKER_SAFE"/>
             <xs:enumeration value="AUDIO_DEVICE_OUT_IP"/>
+            <xs:enumeration value="AUDIO_DEVICE_OUT_MULTICHANNEL_GROUP"/>
             <xs:enumeration value="AUDIO_DEVICE_OUT_BUS"/>
             <xs:enumeration value="AUDIO_DEVICE_OUT_PROXY"/>
             <xs:enumeration value="AUDIO_DEVICE_OUT_USB_HEADSET"/>