ARM: UniPhier: fix property names of aliases nodes of device trees

The property name of the "aliases" node should be "serial*"
to assign a desired number for the device sequence number.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

arch/arm/dts/uniphier-ph1-ld4-ref.dts

@@ -25,10 +25,10 @@
 	};
 
 	aliases {
-		uart0 = &uart0;
-		uart1 = &uart1;
-		uart2 = &uart2;
-		uart3 = &uart3;
+		serial0 = &uart0;
+		serial1 = &uart1;
+		serial2 = &uart2;
+		serial3 = &uart3;
 		i2c0 = &i2c0;
 		i2c1 = &i2c1;
 		i2c2 = &i2c2;

arch/arm/dts/uniphier-ph1-pro4-ref.dts

@@ -25,10 +25,10 @@
 	};
 
 	aliases {
-		uart0 = &uart0;
-		uart1 = &uart1;
-		uart2 = &uart2;
-		uart3 = &uart3;
+		serial0 = &uart0;
+		serial1 = &uart1;
+		serial2 = &uart2;
+		serial3 = &uart3;
 		i2c0 = &i2c0;
 		i2c1 = &i2c1;
 		i2c2 = &i2c2;

arch/arm/dts/uniphier-ph1-sld3-ref.dts

@@ -25,9 +25,9 @@
 	};
 
 	aliases {
-		uart0 = &uart0;
-		uart1 = &uart1;
-		uart2 = &uart2;
+		serial0 = &uart0;
+		serial1 = &uart1;
+		serial2 = &uart2;
 		i2c0 = &i2c0;
 		i2c1 = &i2c1;
 		i2c2 = &i2c2;

arch/arm/dts/uniphier-ph1-sld8-ref.dts

@@ -25,10 +25,10 @@
 	};
 
 	aliases {
-		uart0 = &uart0;
-		uart1 = &uart1;
-		uart2 = &uart2;
-		uart3 = &uart3;
+		serial0 = &uart0;
+		serial1 = &uart1;
+		serial2 = &uart2;
+		serial3 = &uart3;
 		i2c0 = &i2c0;
 		i2c1 = &i2c1;
 		i2c2 = &i2c2;