ARM: dts: vf: Fix memory node duplication

Boards based on vf500/vf600 have duplicate memory nodes:

- One coming from the board dts file: memory@

- One coming from the vf500.dtsi/vf610m4.dtsi files.

Fix the duplication by removing the memory node from the dtsi file
and by adding 'device_type = "memory";' in the board dts.
Reported-by: Rob Herring <robh@kernel.org>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/vf500-colibri.dtsi

@@ -47,6 +47,7 @@ / {
 	compatible = "toradex,vf610-colibri_vf50", "fsl,vf500";
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0x80000000 0x8000000>;
 	};
 

arch/arm/boot/dts/vf500.dtsi

@@ -10,7 +10,6 @@ / {
 	#size-cells = <1>;
 	chosen { };
 	aliases { };
-	memory { device_type = "memory"; };
 
 	cpus {
 		#address-cells = <1>;

arch/arm/boot/dts/vf610-bk4.dts

@@ -16,6 +16,7 @@ chosen {
 	};
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0x80000000 0x8000000>;
 	};
 

arch/arm/boot/dts/vf610-colibri.dtsi

@@ -47,6 +47,7 @@ / {
 	compatible = "toradex,vf610-colibri_vf61", "fsl,vf610";
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0x80000000 0x10000000>;
 	};
 };

arch/arm/boot/dts/vf610-cosmic.dts

@@ -20,6 +20,7 @@ chosen {
 	};
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0x80000000 0x10000000>;
 	};
 

arch/arm/boot/dts/vf610-twr.dts

@@ -14,6 +14,7 @@ chosen {
 	};
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0x80000000 0x8000000>;
 	};
 

arch/arm/boot/dts/vf610-zii-cfu1.dts

@@ -16,6 +16,7 @@ chosen {
 	};
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0x80000000 0x20000000>;
 	};
 

arch/arm/boot/dts/vf610-zii-dev.dtsi

@@ -50,6 +50,7 @@ chosen {
 	};
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0x80000000 0x20000000>;
 	};
 

arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts

@@ -24,6 +24,7 @@ chosen {
 	};
 
 	memory@80000000 {
+		device_type = "memory";
 		reg = <0x80000000 0x20000000>;
 	};
 

arch/arm/boot/dts/vf610m4-colibri.dts

@@ -55,6 +55,7 @@ chosen {
 	};
 
 	memory@8c000000 {
+		device_type = "memory";
 		reg = <0x8c000000 0x3000000>;
 	};
 };

arch/arm/boot/dts/vf610m4.dtsi

@@ -50,7 +50,6 @@ / {
 	#size-cells = <1>;
 	chosen { };
 	aliases { };
-	memory { device_type = "memory"; };
 };
 
 &mscm_ir {