arm64: dts: mediatek: add device-tree for Genio 1200 EVK board

Add basic device-tree for the Genio 1200-EVK board. This board
is made by MediaTek and has a MT8395 SoC (MT8195 family),
associated with the MT6359 and MT6360 PMICs, and
the MT7921 connectivity chip.

The IOs available on that board are:
* 1 USB Type-C connector with DP aux mode support
* 2 USB Type-A connector with a USB hub
* 1 micro-USB port for gadget or OTG support
* 1 full size HDMI RX and 1 full size HDMI TX connector
* 1 micro SD slot
* 40 pins header
* SPI interface header
* 1 M.2 slot
* 1 audio jack
* 1 micro-USB port for serial debug
* 2 connectors for DSI displays, 1 of the DSI panel is installed
* 3 connectors for CSI cameras
* 1 connector for a eDP panel
* 1 MMC storage
* 1 Touch Panel (installed DSI display)
* 1 M.2 slot for 5G dongle

This commit adds basic support in order to be able to boot.

Signed-off-by: Ben Lok <ben.lok@mediatek.com>
Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230914055145.16801-2-macpaul.lin@mediatek.com


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