dt-bindings: memory-controllers: Make "additionalProperties: true" explicit

Make it explicit that child nodes have additional properties and the
child node schema is not complete. The complete schemas are applied
separately based the compatible strings.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20230925212626.1974676-1-robh@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: robherring

Documentation/devicetree/bindings/memory-controllers/ingenic,nemc.yaml

@@ -40,6 +40,7 @@ patternProperties:
   ".*@[0-9]+$":
     type: object
     $ref: mc-peripheral-props.yaml#
+    additionalProperties: true
 
 required:
   - compatible

Documentation/devicetree/bindings/memory-controllers/renesas,rpc-if.yaml

@@ -80,6 +80,8 @@ properties:
 patternProperties:
   "flash@[0-9a-f]+$":
     type: object
+    additionalProperties: true
+
     properties:
       compatible:
         contains:

Documentation/devicetree/bindings/memory-controllers/ti,gpmc.yaml

@@ -130,7 +130,7 @@ patternProperties:
       bus. The device can be a NAND chip, SRAM device, NOR device
       or an ASIC.
     $ref: ti,gpmc-child.yaml
-
+    additionalProperties: true
 
 required:
   - compatible