audio: add Bluetooth LE Audio broadcast device

Add audio device type definition for a Bluetooth LE
audio broadcast group.

Bug: 150670922
Test: make.

Change-Id: Ib2b02cd272895c0aebfb9c59fcba66b4b6ff7a1a
diff --git a/media/libaudioclient/AidlConversion.cpp b/media/libaudioclient/AidlConversion.cpp
index 323e002..1d30f11 100644
--- a/media/libaudioclient/AidlConversion.cpp
+++ b/media/libaudioclient/AidlConversion.cpp
@@ -601,6 +601,11 @@
                         AudioDeviceType::OUT_SPEAKER,
                         AudioDeviceDescription::CONNECTION_BT_LE())
             },
+            {
+                AUDIO_DEVICE_OUT_BLE_BROADCAST, make_AudioDeviceDescription(
+                        AudioDeviceType::OUT_BROADCAST,
+                        AudioDeviceDescription::CONNECTION_BT_LE())
+            },
             // AUDIO_DEVICE_IN_AMBIENT and IN_COMMUNICATION are removed since they were deprecated.
             {
                 AUDIO_DEVICE_IN_BUILTIN_MIC, make_AudioDeviceDescription(