android13/hardware/interfaces/bluetooth/audio/aidl/default/bluetooth_audio.xml

<manifest version="1.0" type="device">
    <hal format="aidl">
        <name>android.hardware.bluetooth.audio</name>
        <version>2</version>
        <fqname>IBluetoothAudioProviderFactory/default</fqname>
    </hal>
</manifest>