dt-bindings: arm,vexpress-juno: Allow interrupt-map properties in bus node

Allow interrupt-map properties which are already used in the bus node.

Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://patch.msgid.link/20251215212932.3324144-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml

@@ -157,6 +157,12 @@ patternProperties:
               - const: simple-bus
           - const: simple-bus
 
+      "#interrupt-cells":
+        const: 1
+
+      interrupt-map: true
+      interrupt-map-mask: true
+
     patternProperties:
       '^motherboard-bus@':
         type: object