arm64: dts: ti: k3-j721e-sk: Define aliases at board level

Define the aliases at the board level instead of using generic aliases
at SoC level.
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20230601183151.1000157-8-nm@ti.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-j721e-sk.dts

@@ -16,6 +16,15 @@ / {
 	compatible = "ti,j721e-sk", "ti,j721e";
 	model = "Texas Instruments J721E SK";
 
+	aliases {
+		serial0 = &wkup_uart0;
+		serial1 = &mcu_uart0;
+		serial2 = &main_uart0;
+		serial3 = &main_uart1;
+		ethernet0 = &cpsw_port1;
+		mmc1 = &main_sdhci1;
+	};
+
 	chosen {
 		stdout-path = "serial2:115200n8";
 	};