dt-bindings: mfd: logicvc: Add patternProperties for the display

The LogiCVC multi-function device has a display part which is now
described in its binding. Add a patternProperties match for it.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Documentation/devicetree/bindings/mfd/xylon,logicvc.yaml

@@ -46,6 +46,9 @@ patternProperties:
   "^gpio@[0-9a-f]+$":
     $ref: /schemas/gpio/xylon,logicvc-gpio.yaml#
 
+  "^display@[0-9a-f]+$":
+    $ref: /schemas/display/xylon,logicvc-display.yaml#
+
 required:
   - compatible
   - reg