ARM: socfpga: dts: enable UART1 for the debug uart

Arria10 devkit is using UART1 for the debug uart port. Remove
unused aliases.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
---
v2: Add removal of unused aliases

arch/arm/boot/dts/socfpga_arria10.dtsi

@@ -21,18 +21,6 @@ / {
 	#address-cells = <1>;
 	#size-cells = <1>;
 
-	aliases {
-		ethernet0 = &gmac0;
-		ethernet1 = &gmac1;
-		ethernet2 = &gmac2;
-		serial0 = &uart0;
-		serial1 = &uart1;
-		timer0 = &timer0;
-		timer1 = &timer1;
-		timer2 = &timer2;
-		timer3 = &timer3;
-	};
-
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;

arch/arm/boot/dts/socfpga_arria10_socdk.dts

@@ -40,9 +40,9 @@ osc1 {
 				};
 			};
 		};
-
-		serial0@ffc02000 {
-			status = "okay";
-		};
 	};
 };
+
+&uart1 {
+	status = "okay";
+};