Add the UART driver for MediaTek MT8188, giving the Genio boards a
console. Register access is split into a shared core and a small
per-SoC instantiation layer, so other MediaTek SoCs can reuse the core.
The driver is instantiated for every enabled node rather than a fixed
instance, and takes its gate clock from the infra-ao controller.
Co-authored-by: Felix Freimann <felix.freimann@mediatek.com>
Signed-off-by: Aary Patil <aary.patil@mediatek.com>
