Merge "HAL: Avoid FATAL log on expected transaction status" into tm-dev

  auto aidl_retval = provider_->startSession(

      stack_if, transport_->GetAudioConfiguration(), latency_modes, &mq_desc);

  if (!aidl_retval.isOk()) {

    if (aidl_retval.getExceptionCode() == EX_ILLEGAL_ARGUMENT) {

      LOG(ERROR) << __func__ << ": BluetoothAudioHal Error: "

                 << aidl_retval.getDescription() << ", audioConfig="

                 << transport_->GetAudioConfiguration().toString();

    } else {

      LOG(FATAL) << __func__ << ": BluetoothAudioHal failure: "

                 << aidl_retval.getDescription();

    }

    return -EPROTO;

  }

  data_mq.reset(new DataMQ(mq_desc));