dt-bindings: display/msm/gmu: Update Adreno 623 bindings

Update Adreno 623's dt-binding to remove smmu_clk which is not required
for this GMU.

Signed-off-by: Jie Zhang <quic_jiezh@quicinc.com>
Signed-off-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/672455/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>

Documentation/devicetree/bindings/display/msm/gmu.yaml

@@ -124,6 +124,40 @@ allOf:
           contains:
             enum:
               - qcom,adreno-gmu-623.0
+    then:
+      properties:
+        reg:
+          items:
+            - description: Core GMU registers
+            - description: Resource controller registers
+            - description: GMU PDC registers
+        reg-names:
+          items:
+            - const: gmu
+            - const: rscc
+            - const: gmu_pdc
+        clocks:
+          items:
+            - description: GMU clock
+            - description: GPU CX clock
+            - description: GPU AXI clock
+            - description: GPU MEMNOC clock
+            - description: GPU AHB clock
+            - description: GPU HUB CX clock
+        clock-names:
+          items:
+            - const: gmu
+            - const: cxo
+            - const: axi
+            - const: memnoc
+            - const: ahb
+            - const: hub
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
               - qcom,adreno-gmu-635.0
               - qcom,adreno-gmu-660.1
               - qcom,adreno-gmu-663.0