ARM: sunxi: Rename uart nodes to serial

The other architecture use serial@address for their uart nodes, so
rename our uart dt nodes to be consistent

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
diff --git a/arch/arm/boot/dts/sun5i-a13-olinuxino.dts b/arch/arm/boot/dts/sun5i-a13-olinuxino.dts
index 33d1c7e..f1579a8 100644
--- a/arch/arm/boot/dts/sun5i-a13-olinuxino.dts
+++ b/arch/arm/boot/dts/sun5i-a13-olinuxino.dts
@@ -32,7 +32,7 @@
 			};
 		};
 
-		uart1: uart@01c28400 {
+		uart1: serial@01c28400 {
 			pinctrl-names = "default";
 			pinctrl-0 = <&uart1_pins_b>;
 			status = "okay";