ARM: sunxi: Add the pin groups for UART0 and UART1 on sun4i

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/boot/dts/sun4i-a10.dtsi

@@ -23,6 +23,27 @@ pinctrl@01c20800 {
 			reg = <0x01c20800 0x400>;
 			#address-cells = <1>;
 			#size-cells = <0>;
+
+			uart0_pins_a: uart0@0 {
+				allwinner,pins = "PB22", "PB23";
+				allwinner,function = "uart0";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+
+			uart0_pins_b: uart0@1 {
+				allwinner,pins = "PF2", "PF4";
+				allwinner,function = "uart0";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+
+			uart1_pins_a: uart1@0 {
+				allwinner,pins = "PA10", "PA11";
+				allwinner,function = "uart1";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
 		};
 	};
 };