dt-bindings: soc: mediatek: specify which compatible requires clocks property

According to the mtk-mutex.c driver and the SoC DTS, the clock isn't
required to work properly for some of MTK SoC. Improve the clock
requirement by adding a condition which is function to the compatible.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://lore.kernel.org/r/20230220-display-v1-14-45cbc68e188b@baylibre.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Documentation/devicetree/bindings/soc/mediatek/mediatek,mutex.yaml

@@ -71,12 +71,30 @@ properties:
       4 arguments defined in this property. Each GCE subsys id is mapping to
       a client defined in the header include/dt-bindings/gce/<chip>-gce.h.
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - mediatek,mt2701-disp-mutex
+              - mediatek,mt2712-disp-mutex
+              - mediatek,mt6795-disp-mutex
+              - mediatek,mt8173-disp-mutex
+              - mediatek,mt8186-disp-mutex
+              - mediatek,mt8186-mdp3-mutex
+              - mediatek,mt8192-disp-mutex
+              - mediatek,mt8195-disp-mutex
+    then:
+      required:
+        - clocks
+
+
 required:
   - compatible
   - reg
   - interrupts
   - power-domains
-  - clocks
 
 additionalProperties: false