ARM: dts: correct invalid I/O definition for MMC/SD card detect on T410

These definitions are hex, and the old value (decimal 40) doesn't make
sense in the context. I do not have a T410 and cannot test if this makes
any practical difference.

Fixes: f24f1bdc ("ARM: dts: Enable emmc on hp t410")
signed-off-by: Graeme Smecher <gsmecher@threespeedlogic.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>