dt-bindings: arm: mediatek: Add mt8195 pericfg compatible

Add mt8195 pericfg compatible to binding document.

Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220216113131.13145-2-tinghan.shen@mediatek.com


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