dt-bindings: clock: qcom,sm4450-dispcc: Reference qcom,gcc.yaml

Reference the common qcom,gcc.yaml schema to unify the common
parts of the binding.

Suggested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250717-gcc-ref-fixes-v2-4-a2a571d2be28@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: Satya Priya Kakitapalli

Documentation/devicetree/bindings/clock/qcom,sm4450-dispcc.yaml

@@ -20,9 +20,6 @@ properties:
   compatible:
     const: qcom,sm4450-dispcc
 
-  reg:
-    maxItems: 1
-
   clocks:
     items:
       - description: Board XO source
@@ -32,24 +29,15 @@ properties:
       - description: Byte clock from DSI PHY0
       - description: Pixel clock from DSI PHY0
 
-  '#clock-cells':
-    const: 1
-
-  '#reset-cells':
-    const: 1
-
-  '#power-domain-cells':
-    const: 1
-
 required:
   - compatible
-  - reg
   - clocks
-  - '#clock-cells'
-  - '#reset-cells'
   - '#power-domain-cells'
 
-additionalProperties: false
+allOf:
+  - $ref: qcom,gcc.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |