spi: dt-bindings: 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>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20230925212614.1974243-1-robh@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/spi/allwinner,sun4i-a10-spi.yaml

@@ -46,6 +46,8 @@ properties:
 patternProperties:
   "^.*@[0-9a-f]+":
     type: object
+    additionalProperties: true
+
     properties:
       reg:
         items:

Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml

@@ -68,6 +68,8 @@ properties:
 patternProperties:
   "^.*@[0-9a-f]+":
     type: object
+    additionalProperties: true
+
     properties:
       reg:
         items:

Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml

@@ -50,6 +50,7 @@ properties:
 patternProperties:
   "@[0-9a-f]+$":
     type: object
+    additionalProperties: true
 
     properties:
       spi-rx-bus-width:

Documentation/devicetree/bindings/spi/rockchip-sfc.yaml

@@ -47,6 +47,8 @@ properties:
 patternProperties:
   "^flash@[0-3]$":
     type: object
+    additionalProperties: true
+
     properties:
       reg:
         minimum: 0

Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml

@@ -160,6 +160,8 @@ properties:
 patternProperties:
   "^.*@[0-9a-f]+$":
     type: object
+    additionalProperties: true
+
     properties:
       reg:
         minimum: 0