dt-bindings: iio: humidity: hdc3020: add interrupt bindings in example

Add interrupt bindings in example.
Signed-off-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240214085350.19382-3-dima.fedrau@gmail.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/humidity/ti,hdc3020.yaml

@@ -43,6 +43,7 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/interrupt-controller/irq.h>
     i2c {
         #address-cells = <1>;
         #size-cells = <0>;
@@ -51,5 +52,7 @@ examples:
             compatible = "ti,hdc3021", "ti,hdc3020";
             reg = <0x47>;
             vdd-supply = <&vcc_3v3>;
+            interrupt-parent = <&gpio3>;
+            interrupts = <23 IRQ_TYPE_EDGE_RISING>;
         };
     };