Add Bluetooth Audio HAL interface V2 as hal_audio_hwservice

Bluetooth Audio HAL interface is an unified HIDL interface for BT Stack
and Audio HAL. It works the same as IBluetoothAudioOffload and uses the
same rules.

Bug: 111519504
Test: manual

Change-Id: Ifdff0d2d9a111abc51ed74c223d2e430ad51b203
diff --git a/private/hwservice_contexts b/private/hwservice_contexts
index 207e652..859293d 100644
--- a/private/hwservice_contexts
+++ b/private/hwservice_contexts
@@ -14,6 +14,7 @@
 android.hardware.biometrics.fingerprint::IBiometricsFingerprint u:object_r:hal_fingerprint_hwservice:s0
 android.hardware.bluetooth::IBluetoothHci                       u:object_r:hal_bluetooth_hwservice:s0
 android.hardware.bluetooth.a2dp::IBluetoothAudioOffload         u:object_r:hal_audio_hwservice:s0
+android.hardware.bluetooth.audio::IBluetoothAudioProvidersFactory   u:object_r:hal_audio_hwservice:s0
 android.hardware.boot::IBootControl                             u:object_r:hal_bootctl_hwservice:s0
 android.hardware.broadcastradio::IBroadcastRadio                u:object_r:hal_broadcastradio_hwservice:s0
 android.hardware.broadcastradio::IBroadcastRadioFactory         u:object_r:hal_broadcastradio_hwservice:s0