ARM: dts: socfpga: align UART node name with bindings

Bindings expect UART/serial node names to be "serial".

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Dinh Nguyen <[e-mail]>

arch/arm/boot/dts/socfpga.dtsi

···
 			reset-names = "timer";
 		};
 
-		uart0: serial0@ffc02000 {
+		uart0: serial@ffc02000 {
 			compatible = "snps,dw-apb-uart";
 			reg = <0xffc02000 0x1000>;
 			interrupts = <0 162 4>;
···
 			resets = <&rst UART0_RESET>;
 		};
 
-		uart1: serial1@ffc03000 {
+		uart1: serial@ffc03000 {
 			compatible = "snps,dw-apb-uart";
 			reg = <0xffc03000 0x1000>;
 			interrupts = <0 163 4>;

arch/arm/boot/dts/socfpga_arria10.dtsi

···
 			reset-names = "timer";
 		};
 
-		uart0: serial0@ffc02000 {
+		uart0: serial@ffc02000 {
 			compatible = "snps,dw-apb-uart";
 			reg = <0xffc02000 0x100>;
 			interrupts = <0 110 IRQ_TYPE_LEVEL_HIGH>;
···
 			status = "disabled";
 		};
 
-		uart1: serial1@ffc02100 {
+		uart1: serial@ffc02100 {
 			compatible = "snps,dw-apb-uart";
 			reg = <0xffc02100 0x100>;
 			interrupts = <0 111 IRQ_TYPE_LEVEL_HIGH>;

arch/arm/boot/dts/socfpga_vt.dts

···
 			clock-frequency = <7000000>;
 		};
 
-		serial0@ffc02000 {
+		serial@ffc02000 {
 			clock-frequency = <7372800>;
 		};
 
-		serial1@ffc03000 {
+		serial@ffc03000 {
 			clock-frequency = <7372800>;
 		};