ARM: dts: Use labels for overriding nodes in exynos4412-tiny4412

Usage of labels instead of full paths reduces possible mistakes when
overriding nodes.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>

arch/arm/boot/dts/exynos4412-tiny4412.dts

@@ -56,33 +56,6 @@ led4 {
 		};
 	};
 
-	rtc@10070000 {
-		status = "okay";
-	};
-
-	sdhci@12530000 {
-		bus-width = <4>;
-		pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
-		pinctrl-names = "default";
-		status = "okay";
-	};
-
-	serial@13800000 {
-		status = "okay";
-	};
-
-	serial@13810000 {
-		status = "okay";
-	};
-
-	serial@13820000 {
-		status = "okay";
-	};
-
-	serial@13830000 {
-		status = "okay";
-	};
-
 	fixed-rate-clocks {
 		xxti {
 			compatible = "samsung,clock-xxti";
@@ -95,3 +68,30 @@ xusbxti {
 		};
 	};
 };
+
+&rtc {
+	status = "okay";
+};
+
+&sdhci_2 {
+	bus-width = <4>;
+	pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&serial_0 {
+	status = "okay";
+};
+
+&serial_1 {
+	status = "okay";
+};
+
+&serial_2 {
+	status = "okay";
+};
+
+&serial_3 {
+	status = "okay";
+};