soc: mediatek: pwrap: add pwrap driver for MT8186 SoC

MT8186 are highly integrated SoC and use PMIC_MT6366 for
power management. This patch adds pwrap master driver to
access PMIC_MT6366.

Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Johnson Wang <johnson.wang@mediatek.com>
Link: https://lore.kernel.org/r/20220207083034.15327-2-johnson.wang@mediatek.com


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