arm64: dts: mediatek: mt6795-sony-xperia-m5: Add pinctrl for mmc1/mmc2

Add pinctrl nodes for the MicroSD slot on mmc1 and SDIO Controller
on mmc2 and assign those to the respective controller nodes.
This makes sure that all of the pins are muxed in the right state
and with the right pullup/down(s) before trying to use the mmc
controllers.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250724083914.61351-22-angelogioacchino.delregno@collabora.com


Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>