ARM: dts: nuvoton: wpcm450: Add missing aliases for serial0/serial1

Without these, /chosen/stdout-path = "serial0:115200n8" does not work.

Signed-off-by: Jonathan Neuschäfer <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Joel Stanley <[e-mail]>

arch/arm/boot/dts/nuvoton-wpcm450-supermicro-x9sci-ln4f.dts

···
 	model = "Supermicro X9SCi-LN4F BMC";
 	compatible = "supermicro,x9sci-ln4f-bmc", "nuvoton,wpcm450";
 
+	aliases {
+		serial0 = &serial0;
+		serial1 = &serial1;
+	};
+
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};