Merge "hal: add check for BT SCO status when start voice call"

    uc_info->in_snd_device = SND_DEVICE_NONE;

    uc_info->out_snd_device = SND_DEVICE_NONE;

    if (audio_is_bluetooth_sco_device(uc_info->devices) && !adev->bt_sco_on) {

        ALOGE("start_call: couldn't find BT SCO, SCO is not ready");

        adev->voice.in_call = false;

        ret = -EIO;

        goto error_start_voice;

    }

    list_add_tail(&adev->usecase_list, &uc_info->list);

    select_devices(adev, usecase_id);