mmc: mxcmmc: Use mmc_card_sdio macro

Use mmc_card_sdio macro to simplify code.

Signed-off-by: Seunghui Lee <sh043.lee@samsung.com>
Link: https://lore.kernel.org/r/20220713033635.28432-3-sh043.lee@samsung.com


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>