arm64: dts: imx93: add fsl,stop-mode property to support WOL

Add fsl,stop-mode property for FEC to support Wake-on-LAN (WOL)
feature. Otherwise, the WOL feature of FEC does not work.
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx93.dtsi

@@ -724,6 +724,7 @@ fec: ethernet@42890000 {
 				assigned-clock-rates = <100000000>, <250000000>, <50000000>;
 				fsl,num-tx-queues = <3>;
 				fsl,num-rx-queues = <3>;
+				fsl,stop-mode = <&wakeupmix_gpr 0x0c 1>;
 				status = "disabled";
 			};