ARM: tegra: apalis_t30: pull-up sd card detect pins

In order to avoid any floating SD card detect pins as may e.g. happen on
Ixora V1.1A pull them all up.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>