dt-bindings: remoteproc: mediatek: Add binding for mt8188 scp

Add the compatible for mt8188 SCP to the binding.
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220715051821.30707-2-tinghan.shen@mediatek.comSigned-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml

@@ -18,6 +18,7 @@ properties:
     enum:
       - mediatek,mt8183-scp
       - mediatek,mt8186-scp
+      - mediatek,mt8188-scp
       - mediatek,mt8192-scp
       - mediatek,mt8195-scp
 
@@ -80,6 +81,7 @@ allOf:
           enum:
             - mediatek,mt8183-scp
             - mediatek,mt8186-scp
+            - mediatek,mt8188-scp
     then:
       properties:
         reg: