dt-bindings: arm: Add compatible for Mediatek MT8195

This commit adds dt-binding documentation for the Mediatek MT8195
reference board.

Signed-off-by: Seiya Wang <seiya.wang@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210319023427.16711-8-seiya.wang@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Documentation/devicetree/bindings/arm/mediatek.yaml

@@ -118,6 +118,10 @@ properties:
           - enum:
               - mediatek,mt8183-evb
           - const: mediatek,mt8183
+      - items:
+          - enum:
+              - mediatek,mt8195-evb
+          - const: mediatek,mt8195
       - description: Google Krane (Lenovo IdeaPad Duet, 10e,...)
         items:
           - enum: