dt-bindings: net: qca,ar803x: add missing unevaluatedProperties for each regulator

Each regulator node, which references common regulator.yaml schema,
should disallow additional or unevaluated properties. Otherwise
mistakes in properties will go unnoticed.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Conor Dooley <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

Documentation/devicetree/bindings/net/qca,ar803x.yaml

···
     description:
       Initial data for the VDDIO regulator. Set this to 1.5V or 1.8V.
     $ref: /schemas/regulator/regulator.yaml
+    unevaluatedProperties: false
 
   vddh-regulator:
     type: object
···
       Dummy subnode to model the external connection of the PHY VDDH
       regulator to VDDIO.
     $ref: /schemas/regulator/regulator.yaml
+    unevaluatedProperties: false
 
 unevaluatedProperties: false