dt-bindings: power: fsl,scu-pd: Document imx8dl

imx8dxl also contains the SCU PD block.

Add an entry for 'fsl,imx8dl-scu-pd'.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20231113184230.14413-1-festevam@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/power/fsl,scu-pd.yaml

@@ -20,6 +20,7 @@ properties:
   compatible:
     items:
       - enum:
+          - fsl,imx8dl-scu-pd
           - fsl,imx8qm-scu-pd
           - fsl,imx8qxp-scu-pd
       - const: fsl,scu-pd