arm64: dts: mediatek: mt8167: add power domains

Add support for the MT8167 power domains.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Link: https://lore.kernel.org/r/20210405172836.2038526-1-fparent@baylibre.com


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