ARM: dts: uniphier: give fixed port number to support card serial

Add this to the aliases node to make it more convenient.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/boot/dts/uniphier-ld4-ref.dts

@@ -20,7 +20,7 @@ chosen {
 
 	aliases {
 		serial0 = &serial0;
-		serial1 = &serial1;
+		serial1 = &serialsc;
 		serial2 = &serial2;
 		serial3 = &serial3;
 		i2c0 = &i2c0;

arch/arm/boot/dts/uniphier-ld6b-ref.dts

@@ -22,6 +22,7 @@ aliases {
 		serial0 = &serial0;
 		serial1 = &serial1;
 		serial2 = &serial2;
+		serial3 = &serialsc;
 		i2c0 = &i2c0;
 		i2c1 = &i2c1;
 		i2c2 = &i2c2;

arch/arm/boot/dts/uniphier-pro4-ref.dts

@@ -22,7 +22,7 @@ aliases {
 		serial0 = &serial0;
 		serial1 = &serial1;
 		serial2 = &serial2;
-		serial3 = &serial3;
+		serial3 = &serialsc;
 		i2c0 = &i2c0;
 		i2c1 = &i2c1;
 		i2c2 = &i2c2;

arch/arm/boot/dts/uniphier-sld8-ref.dts

@@ -20,7 +20,7 @@ chosen {
 
 	aliases {
 		serial0 = &serial0;
-		serial1 = &serial1;
+		serial1 = &serialsc;
 		serial2 = &serial2;
 		serial3 = &serial3;
 		i2c0 = &i2c0;