arm64: dts: ti: k3-j784s4-evm: Add alias for MCU CPSW2G

Add alias for the MCU CPSW2G port to enable Linux to fetch MAC Address
for the port directly from U-Boot.
Signed-off-by: Chintan Vankar <c-vankar@ti.com>
Link: https://lore.kernel.org/r/20240502091002.3659435-2-c-vankar@ti.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-j784s4-evm.dts

@@ -27,6 +27,7 @@ aliases {
 		mmc1 = &main_sdhci1;
 		i2c0 = &wkup_i2c0;
 		i2c3 = &main_i2c0;
+		ethernet0 = &mcu_cpsw_port1;
 	};
 
 	memory@80000000 {