ARM: omap3: Add missing memory node in SOM-LV

The skeleton.dtsi file was removed in ARM64 for different reasons as
explained in commit ("3ebee5a2 arm64: dts: kill skeleton.dtsi").

commit ("766a1fe7 ARM: omap3: Add missing memory node") had
fixes for Torpedo and Overo boards, but this SOM-LV was missed.

This should help prevent the DTC warning:
"Node /memory has a reg or ranges property, but no unit name"
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/logicpd-som-lv.dtsi

@@ -13,6 +13,11 @@ cpu@0 {
 		};
 	};
 
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0>;
+	};
+
 	wl12xx_vmmc: wl12xx_vmmc {
 		compatible = "regulator-fixed";
 		regulator-name = "vwl1271";