arm: orion5x: enable xor for orion5x platform

The orion5x SoC includes DMA functionality, so lets enable that
and turn it on by default.
Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/orion5x.dtsi

@@ -100,6 +100,25 @@ i2c@11000 {
 			status = "disabled";
 		};
 
+		xor@60900 {
+			compatible = "marvell,orion-xor";
+			reg = <0x60900 0x100
+			       0x60b00 0x100>;
+			status = "okay";
+
+			xor00 {
+			      interrupts = <30>;
+			      dmacap,memcpy;
+			      dmacap,xor;
+			};
+			xor01 {
+			      interrupts = <31>;
+			      dmacap,memcpy;
+			      dmacap,xor;
+			      dmacap,memset;
+			};
+		};
+
 		crypto@90000 {
 			compatible = "marvell,orion-crypto";
 			reg = <0x90000 0x10000>,