ARM: dts: exynos: Add missing unit name to memory nodes in Exynos4 DTS

This patch fixes the following DTC warnings:

"Node /memory has a reg or ranges property, but no unit name"

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
diff --git a/arch/arm/boot/dts/exynos4210-origen.dts b/arch/arm/boot/dts/exynos4210-origen.dts
index 6b2c41a..a2c6a13 100644
--- a/arch/arm/boot/dts/exynos4210-origen.dts
+++ b/arch/arm/boot/dts/exynos4210-origen.dts
@@ -24,7 +24,7 @@
 	model = "Insignal Origen evaluation board based on Exynos4210";
 	compatible = "insignal,origen", "samsung,exynos4210", "samsung,exynos4";
 
-	memory {
+	memory@40000000 {
 		device_type = "memory";
 		reg = <0x40000000 0x10000000
 		       0x50000000 0x10000000