media: dt-bindings: atmel,isc: Drop unneeded unevaluatedProperties

The 'port' node schema has both 'additionalProperties' and
'unevaluatedProperties', but only one is necessary.
'additionalProperties' works here, so drop 'unevaluatedProperties' and
move 'additionalProperties' next to the $ref.

Link: https://lore.kernel.org/r/20221207204406.2810864-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/media/atmel,isc.yaml

@@ -45,7 +45,7 @@ properties:
 
   port:
     $ref: /schemas/graph.yaml#/$defs/port-base
-    unevaluatedProperties: false
+    additionalProperties: false
     description:
       Input port node, single endpoint describing the input pad.
 
@@ -77,8 +77,6 @@ properties:
 
         additionalProperties: false
 
-    additionalProperties: false
-
 required:
   - compatible
   - reg