arm64: dts: mediatek: mt6795-xperia-m5: Add eMMC, MicroSD slot, SDIO

Configure and enable the MMC0/1/2 controllers, used for the eMMC chip,
MicroSD card slot and SDIO (WiFi) respectively.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230412112739.160376-26-angelogioacchino.delregno@collabora.com


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