pmdomain: mediatek: Add support for Dimensity 1200 MT6893

Add power domains definitions to implement support for the
MediaTek Dimensity 1200 (MT6893) SoC.

Since this chip's MTCMOS are similar to the ones of Kompanio
820 (MT8192), the definitions from that have been reused where
possible.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Link: https://lore.kernel.org/r/20250410143944.475773-4-angelogioacchino.delregno@collabora.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: AngeloGioacchino Del Regno