dt-bindings: soc: mediatek: devapc: Add bindings for MT8186

Add the dt-binding to support MT8186 devapc.

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220504115501.3490-2-rex-bc.chen@mediatek.com


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