dt-bindings: remoteproc: qcom,adsp: enforce smd-edge schema

The smd-edge child node references respective schema which allows
additional properties, so the ADSP needs to further restrict them.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220906121358.302894-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/remoteproc/qcom,adsp.yaml

@@ -152,6 +152,7 @@ properties:
     description:
       Qualcomm Shared Memory subnode which represents communication edge,
       channels and devices related to the ADSP.
+    unevaluatedProperties: false
 
   glink-edge:
     $ref: /schemas/remoteproc/qcom,glink-edge.yaml#