Add fsl,imx23-digctl.yaml for i.MX23 and i.MX28 to fix below CHECK_DTB
warning:
arch/arm/boot/dts/nxp/mxs/imx23-sansa.dtb: /apb@80000000/apbh-bus@80000000/digctl@8001c000:
failed to match any schema with compatible: ['fsl,imx23-digctl']
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250528183549.694434-1-Frank.Li@nxp.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>