ARM: dts: aspeed: Harma: mapping ttyS2 to UART4.

Change routing to match SOL(Serial Over LAN) settings.
Signed-off-by: Peter Yin <peteryin.openbmc@gmail.com>
Link: https://lore.kernel.org/r/20240412091600.2534693-3-peteryin.openbmc@gmail.comSigned-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts

@@ -12,8 +12,8 @@ / {
 
 	aliases {
 		serial0 = &uart1;
-		serial1 = &uart6;
-		serial2 = &uart2;
+		serial1 = &uart2;
+		serial2 = &uart4;
 		serial4 = &uart5;
 
 		i2c20 = &imux20;