dt-bindings: pinctrl: xlnx,versal-pinctrl: Add missing unevaluatedProperties on '^conf' nodes

Add the missing unevaluatedProperties to disallow extra properties on
the '^conf' nodes.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: robherring

Documentation/devicetree/bindings/pinctrl/xlnx,versal-pinctrl.yaml

@@ -74,6 +74,7 @@ patternProperties:
 
       '^conf':
         type: object
+        unevaluatedProperties: false
         description:
           Pinctrl node's client devices use subnodes for pin configurations,
           which in turn use the standard properties below.