dt-bindings: interrupt-controller: fsl,irqsteer: Document fsl,imx8qm-irqsteer

Add an entry to fsl,imx8qm-irqsteer.

This fixes the following dt-schema warning:

failed to match any schema with compatible: ['fsl,imx8qm-irqsteer', 'fsl,imx-irqsteer']
Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240701204106.160128-1-festevam@gmail.comSigned-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/interrupt-controller/fsl,irqsteer.yaml

@@ -17,6 +17,7 @@ properties:
           - enum:
               - fsl,imx8m-irqsteer
               - fsl,imx8mp-irqsteer
+              - fsl,imx8qm-irqsteer
               - fsl,imx8qxp-irqsteer
           - const: fsl,imx-irqsteer
 
@@ -83,6 +84,7 @@ allOf:
           contains:
             enum:
               - fsl,imx8mp-irqsteer
+              - fsl,imx8qm-irqsteer
               - fsl,imx8qxp-irqsteer
     then:
       required: