dt-bindings: interconnect: restrict opp-table to objects

Simple 'opp-table:true' accepts a boolean property as opp-table, so
restrict it to object to properly enforce real OPP table nodes.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220818061653.9524-1-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/interconnect/fsl,imx8m-noc.yaml

@@ -47,7 +47,8 @@ properties:
     maxItems: 1
 
   operating-points-v2: true
-  opp-table: true
+  opp-table:
+    type: object
 
   fsl,ddrc:
     $ref: "/schemas/types.yaml#/definitions/phandle"

Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml

@@ -36,7 +36,8 @@ properties:
       - const: intermediate
 
   operating-points-v2: true
-  opp-table: true
+  opp-table:
+    type: object
 
   proc-supply:
     description:

Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml

@@ -35,7 +35,8 @@ properties:
     maxItems: 1
 
   operating-points-v2: true
-  opp-table: true
+  opp-table:
+    type: object
 
   reg:
     # BWMON v4 (currently described) and BWMON v5 use one register address