arm64: dts: ti: k3-j721s2-common-proc-board: Alias console uart to serial2

On J721s2 Linux console is on main_uart8 but to be consistent with other
J7 family of devices, alias it to ttyS2 (serial2). This also eliminates
need to have higher number of 8250 runtime UARTs.
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kishon Vijay Abraham I <kishon@ti.com>
Link: https://lore.kernel.org/r/20211223121650.26868-3-vigneshr@ti.com

arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts

@@ -15,13 +15,13 @@ / {
 	model = "Texas Instruments J721S2 EVM";
 
 	chosen {
-		stdout-path = "serial10:115200n8";
-		bootargs = "console=ttyS10,115200n8 earlycon=ns16550a,mmio32,2880000";
+		stdout-path = "serial2:115200n8";
+		bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,2880000";
 	};
 
 	aliases {
 		serial1 = &mcu_uart0;
-		serial10 = &main_uart8;
+		serial2 = &main_uart8;
 		mmc0 = &main_sdhci0;
 		mmc1 = &main_sdhci1;
 		can0 = &main_mcan16;