ARM: dts: calxeda: move memory-controller node out of ecx-common.dtsi

The DDR controller is slightly different in ECX-2000 and ECX-1000, so we
need to have different nodes for each platform.
Signed-off-by: NRob Herring <rob.herring@calxeda.com>
[Device Tree documentation updated.]
Signed-off-by: NRobert Richter <rric@kernel.org>

Documentation/devicetree/bindings/arm/calxeda/mem-ctrlr.txt

 Calxeda DDR memory controller
 
 Properties:
-- compatible : Should be "calxeda,hb-ddr-ctrl"
+- compatible : Should be:
+  - "calxeda,hb-ddr-ctrl" for ECX-1000
+  - "calxeda,ecx-2000-ddr-ctrl" for ECX-2000
 - reg : Address and size for DDR controller registers.
 - interrupts : Interrupt for DDR controller.
 

arch/arm/boot/dts/ecx-2000.dts

@@ -85,6 +85,12 @@ timer {
 				<1 10 0xf08>;
 		};
 
+		memory-controller@fff00000 {
+			compatible = "calxeda,ecx-2000-ddr-ctrl";
+			reg = <0xfff00000 0x1000>;
+			interrupts = <0 91 4>;
+		};
+
 		intc: interrupt-controller@fff11000 {
 			compatible = "arm,cortex-a15-gic";
 			#interrupt-cells = <3>;

arch/arm/boot/dts/ecx-common.dtsi

@@ -45,12 +45,6 @@ sdhci@ffe0e000 {
 			status = "disabled";
 		};
 
-		memory-controller@fff00000 {
-			compatible = "calxeda,hb-ddr-ctrl";
-			reg = <0xfff00000 0x1000>;
-			interrupts = <0 91 4>;
-		};
-
 		ipc@fff20000 {
 			compatible = "arm,pl320", "arm,primecell";
 			reg = <0xfff20000 0x1000>;

arch/arm/boot/dts/highbank.dts

@@ -86,6 +86,12 @@ memory {
 	soc {
 		ranges = <0x00000000 0x00000000 0xffffffff>;
 
+		memory-controller@fff00000 {
+			compatible = "calxeda,hb-ddr-ctrl";
+			reg = <0xfff00000 0x1000>;
+			interrupts = <0 91 4>;
+		};
+
 		timer@fff10600 {
 			compatible = "arm,cortex-a9-twd-timer";
 			reg = <0xfff10600 0x20>;