dt-bindings: mediatek: add compatible for MT8195 pwrap

This adds dt-binding documentation of pwrap for Mediatek MT8195
SoCs Platform.
Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
Link: https://lore.kernel.org/r/20210602112050.12338-2-james.lo@mediatek.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Documentation/devicetree/bindings/soc/mediatek/pwrap.txt

@@ -27,6 +27,7 @@ Required properties in pwrap device node.
 	"mediatek,mt8135-pwrap" for MT8135 SoCs
 	"mediatek,mt8173-pwrap" for MT8173 SoCs
 	"mediatek,mt8183-pwrap" for MT8183 SoCs
+	"mediatek,mt8195-pwrap" for MT8195 SoCs
 	"mediatek,mt8516-pwrap" for MT8516 SoCs
 - interrupts: IRQ for pwrap in SOC
 - reg-names: Must include the following entries: