dt-bindings: media: mtk-vcodec-encoder: add compatible for mt8186

Add compatible for the mt8186 encoder which currently works in the same
way as mt8183.
Signed-off-by: Eugen Hristev <eugen.hristev@collabora.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20231228113245.174706-5-eugen.hristev@collabora.comSigned-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Documentation/devicetree/bindings/media/mediatek,vcodec-encoder.yaml

@@ -16,14 +16,18 @@ description: |+
 
 properties:
   compatible:
-    enum:
-      - mediatek,mt8173-vcodec-enc-vp8
-      - mediatek,mt8173-vcodec-enc
-      - mediatek,mt8183-vcodec-enc
-      - mediatek,mt8188-vcodec-enc
-      - mediatek,mt8192-vcodec-enc
-      - mediatek,mt8195-vcodec-enc
-
+    oneOf:
+      - items:
+          - enum:
+              - mediatek,mt8173-vcodec-enc-vp8
+              - mediatek,mt8173-vcodec-enc
+              - mediatek,mt8183-vcodec-enc
+              - mediatek,mt8188-vcodec-enc
+              - mediatek,mt8192-vcodec-enc
+              - mediatek,mt8195-vcodec-enc
+      - items:
+          - const: mediatek,mt8186-vcodec-enc
+          - const: mediatek,mt8183-vcodec-enc
   reg:
     maxItems: 1