MLK-17048 imx8mq_evk: Fix SD CD pad issue in SPL

MLK-17048 imx8mq_evk: Fix SD CD pad issue in SPL

The EVK board does not use external pull up resistor for SD CD pin, it requires
the pad to be configured as pull up, otherwise the signal level is always low even
the card is not inserted.

This patch configures the pad of CD and RESET to pull up to align with kernel,
although there is already a external pull up for RESET.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>