media: dt-bindings: media: mediatek: vcodec: Adds decoder dt-bindings for mt8186

Adds decoder dt-bindings for mt8186.
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-decoder.yaml

@@ -47,7 +47,9 @@ description: |
 
 properties:
   compatible:
-    const: mediatek,mt8192-vcodec-dec
+    enum:
+      - mediatek,mt8192-vcodec-dec
+      - mediatek,mt8186-vcodec-dec
 
   reg:
     maxItems: 1