ramips: introduce serial0 aliases

This patch introduces serial0 aliases in the ramips DTS files, which can
then be used to denote the active console instead of relying on bootargs.

Signed-off-by: Stanislav Galabov <sgalabov@gmail.com>

target/linux/ramips/dts/LINKIT7688.dts

@@ -10,6 +10,10 @@
 		bootargs = "console=ttyS2,57600";
 	};
 
+	aliases {
+		serial0 = &uart2;
+	};
+
 	memory@0 {
 		device_type = "memory";
 		reg = <0x0 0x8000000>;

target/linux/ramips/dts/mt7620a.dtsi

@@ -23,6 +23,7 @@
 	aliases {
 		spi0 = &spi0;
 		spi1 = &spi1;
+		serial0 = &uartlite;
 	};
 
 	palmbus@10000000 {
@@ -239,7 +240,7 @@
 			pinctrl-0 = <&spi_cs1>;
 		};
 
-		uartlite@c00 {
+		uartlite: uartlite@c00 {
 			compatible = "ralink,mt7620a-uart", "ralink,rt2880-uart", "ns16550a";
 			reg = <0xc00 0x100>;
 

target/linux/ramips/dts/mt7620n.dtsi

@@ -23,6 +23,7 @@
 	aliases {
 		spi0 = &spi0;
 		spi1 = &spi1;
+		serial0 = &uartlite;
 	};
 
 	palmbus@10000000 {
@@ -191,7 +192,7 @@
 			pinctrl-0 = <&spi_cs1>;
 		};
 
-		uartlite@c00 {
+		uartlite: uartlite@c00 {
 			compatible = "ralink,mt7620a-uart", "ralink,rt2880-uart", "ns16550a";
 			reg = <0xc00 0x100>;
 

target/linux/ramips/dts/mt7621.dtsi

@@ -22,6 +22,10 @@
 		compatible = "mti,cpu-interrupt-controller";
 	};
 
+	aliases {
+		serial0 = &uartlite;
+	};
+
 	cpuclock: cpuclock@0 {
 		#clock-cells = <0>;
 		compatible = "fixed-clock";
@@ -100,7 +104,7 @@
 			    reg = <0x1fbf8000 0x8000>;
  		};
 
-		uartlite@c00 {
+		uartlite: uartlite@c00 {
 			compatible = "ns16550a";
 			reg = <0xc00 0x100>;
 

target/linux/ramips/dts/mt7628an.dtsi

@@ -13,6 +13,10 @@
 		bootargs = "console=ttyS0,57600";
 	};
 
+	aliases {
+		serial0 = &uartlite;
+	};
+
 	cpuintc: cpuintc@0 {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
@@ -154,7 +158,7 @@
 			status = "disabled";
 		};
 
-		uartlite@c00 {
+		uartlite: uartlite@c00 {
 			compatible = "ns16550a";
 			reg = <0xc00 0x100>;
 
@@ -192,7 +196,7 @@
 			status = "disabled";
 		};
 
-		uart2@e00 {
+		uart2: uart2@e00 {
 			compatible = "ns16550a";
 			reg = <0xe00 0x100>;
 

target/linux/ramips/dts/rt2880.dtsi

@@ -13,6 +13,10 @@
 		bootargs = "console=ttyS0,57600";
 	};
 
+	aliases {
+		serial0 = &uartlite;
+	};
+
 	cpuintc: cpuintc@0 {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
@@ -110,7 +114,7 @@
 			status = "disabled";
 		};
 
-		uartlite@c00 {
+		uartlite: uartlite@c00 {
 			compatible = "ralink,rt2880-uart", "ns16550a";
 			reg = <0xc00 0x100>;
 

target/linux/ramips/dts/rt3050.dtsi

@@ -15,6 +15,7 @@
 
 	aliases {
 		spi0 = &spi0;
+		serial0 = &uartlite;
 	};
 
 	cpuintc: cpuintc@0 {
@@ -164,7 +165,7 @@
 			status = "disabled";
 		};
 
-		uartlite@c00 {
+		uartlite: uartlite@c00 {
 			compatible = "ralink,rt3050-uart", "ralink,rt2880-uart", "ns16550a";
 			reg = <0xc00 0x100>;
 

target/linux/ramips/dts/rt3352.dtsi

@@ -23,6 +23,7 @@
 	aliases {
 		spi0 = &spi0;
 		spi1 = &spi1;
+		serial0 = &uartlite;
 	};
 
 	palmbus@10000000 {
@@ -175,7 +176,7 @@
 			status = "disabled";
 		};
 
-		uartlite@c00 {
+		uartlite: uartlite@c00 {
 			compatible = "ralink,rt3352-uart", "ralink,rt2880-uart", "ns16550a";
 			reg = <0xc00 0x100>;
 

target/linux/ramips/dts/rt3883.dtsi

@@ -16,6 +16,7 @@
 	aliases {
 		spi0 = &spi0;
 		spi1 = &spi1;
+		serial0 = &uartlite;
 	};
 
 	cpuintc: cpuintc@0 {
@@ -195,7 +196,7 @@
 			status = "disabled";
 		};
 
-		uartlite@c00 {
+		uartlite: uartlite@c00 {
 			compatible = "ralink,rt3883-uart", "ralink,rt2880-uart", "ns16550a";
 			reg = <0xc00 0x100>;
 

target/linux/ramips/dts/rt5350.dtsi

@@ -23,6 +23,7 @@
 	aliases {
 		spi0 = &spi0;
 		spi1 = &spi1;
+		serial0 = &uartlite;
 	};
 
 	palmbus@10000000 {
@@ -184,7 +185,7 @@
 			status = "disabled";
 		};
 
-		uartlite@c00 {
+		uartlite: uartlite@c00 {
 			compatible = "ralink,rt5350-uart", "ralink,rt2880-uart", "ns16550a";
 			reg = <0xc00 0x100>;