dt-bindings: net: socionext,uniphier-ave4: 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 clock-names and reset-names.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

Documentation/devicetree/bindings/net/socionext,uniphier-ave4.yaml

···
     minItems: 1
     maxItems: 4
 
-  clock-names: true
+  clock-names:
+    minItems: 1
+    maxItems: 4
 
   resets:
     minItems: 1
     maxItems: 2
 
-  reset-names: true
+  reset-names:
+    minItems: 1
+    maxItems: 2
 
   socionext,syscon-phy-mode:
     $ref: /schemas/types.yaml#/definitions/phandle-array