ASoC: dt-bindings: mediatek: Simplify mediatek,clk-provider

"mediatek,clk-provider" property is a string, not an string array, thus
"items" is not really correct.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250514105702.28622-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/mediatek,mt8188-mt6359.yaml

@@ -96,10 +96,9 @@ patternProperties:
       mediatek,clk-provider:
         $ref: /schemas/types.yaml#/definitions/string
         description: Indicates dai-link clock master.
-        items:
-          enum:
-            - cpu
-            - codec
+        enum:
+          - cpu
+          - codec
 
     additionalProperties: false
 

Documentation/devicetree/bindings/sound/mt8186-mt6366-da7219-max98357.yaml

@@ -124,10 +124,9 @@ patternProperties:
       mediatek,clk-provider:
         $ref: /schemas/types.yaml#/definitions/string
         description: Indicates dai-link clock master.
-        items:
-          enum:
-            - cpu
-            - codec
+        enum:
+          - cpu
+          - codec
 
     required:
       - link-name