media: dt-bindings: renesas,vsp1: add top-level constraints

Properties with variable number of items per each device are expected to
have widest constraints in top-level "properties:" block and further
customized (narrowed) in "if:then:".  Add missing top-level constraints
for clocks and clock-names.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250501173411.134130-4-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/media/renesas,vsp1.yaml

@@ -33,8 +33,18 @@ properties:
   interrupts:
     maxItems: 1
 
-  clocks: true
-  clock-names: true
+  clocks:
+    minItems: 1
+    items:
+      - description: Main clock
+      - description: Register access clock
+      - description: Video clock
+
+  clock-names:
+    items:
+      - const: aclk
+      - const: pclk
+      - const: vclk
 
   power-domains:
     maxItems: 1
@@ -78,15 +88,7 @@ allOf:
     then:
       properties:
         clocks:
-          items:
-            - description: Main clock
-            - description: Register access clock
-            - description: Video clock
-        clock-names:
-          items:
-            - const: aclk
-            - const: pclk
-            - const: vclk
+          minItems: 3
       required:
         - clock-names
     else: