dt-bindings: pwrap: mediatek: add pwrap support for MT6779

Add binding document of pwrap for MT6779 SoCs.
Signed-off-by: Argus Lin <argus.lin@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

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

@@ -20,6 +20,7 @@ Required properties in pwrap device node.
 - compatible:
 	"mediatek,mt2701-pwrap" for MT2701/7623 SoCs
 	"mediatek,mt6765-pwrap" for MT6765 SoCs
+	"mediatek,mt6779-pwrap" for MT6779 SoCs
 	"mediatek,mt6797-pwrap" for MT6797 SoCs
 	"mediatek,mt7622-pwrap" for MT7622 SoCs
 	"mediatek,mt8135-pwrap" for MT8135 SoCs