Merge "tv.cec: Handle an unused argument warning"

    Return<void> enableAudioReturnChannel(int32_t portId, bool enable)  override;

    Return<bool> isConnected(int32_t portId)  override;

    static void eventCallback(const hdmi_event_t* event, void* arg) {

    static void eventCallback(const hdmi_event_t* event, void* /* arg */) {

        if (mCallback != nullptr && event != nullptr) {

            if (event->type == HDMI_EVENT_CEC_MESSAGE) {

                size_t length = std::min(event->cec.length,