Merge "IMapper: change an error message" into qt-dev

        if (mMapper3) {

            return true;

        }

        ALOGW_IF(!mMapper3, "failed to get mapper 3.0 service");

        ALOGD_IF(!mMapper3, "failed to get mapper 3.0 service, falling back to mapper 2.0");

        mMapper2 = mapper::V2_0::IMapper::getService();

        ALOGE_IF(!mMapper2, "failed to get mapper 2.0 service");