hal/camera/external_camera_config.xml

<ExternalCamera>
    <Provider>
        <ignore> <!-- Internal video devices to be ignored by external camera HAL -->
            <id>0</id>
        </ignore>
    </Provider>
    <Device>
        <MaxJpegBufferSize bytes="3145728"/>
        <NumVideoBuffers count="4"/>
        <NumStillBuffers count="2"/>
        <FpsList>
            <Limit width="640" height="480" fpsBound="30.0"/>
            <Limit width="1280" height="720" fpsBound="30.0"/>
            <Limit width="1920" height="1080" fpsBound="30.0"/>
        </FpsList>
    </Device>
</ExternalCamera>