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>