mmc_send_status
err = mmc_send_status(sc->dev, sc->dev, ivar->rca,
err = mmc_send_status(sc->dev, sc->dev, ivar->rca, &status);
err = mmc_send_status(brdev, reqdev, rca, &status);
int mmc_send_status(device_t brdev, device_t reqdev, uint16_t rca,