mxs_mmc_start_cmd
static void mxs_mmc_start_cmd(struct mxs_mmc_host *host,
mxs_mmc_start_cmd(host, mrq->cmd);
mxs_mmc_start_cmd(host, mrq->stop);
mxs_mmc_start_cmd(host, mrq->sbc);
mxs_mmc_start_cmd(host, mrq->cmd);