dt-bindings: interrupt-controller: idt,32434-pic: Add missing interrupts property

Interrupts property is required, so add it.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Link: https://lore.kernel.org/r/20210427224201.32285-1-tsbogend@alpha.franken.de
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/interrupt-controller/idt,32434-pic.yaml

@@ -22,6 +22,9 @@ properties:
   reg:
     maxItems: 1
 
+  interrupts:
+    maxItems: 1
+
   interrupt-controller: true
 
 required:
@@ -29,6 +32,7 @@ required:
   - compatible
   - reg
   - interrupt-controller
+  - interrupts
 
 additionalProperties: false