arm: dove: Convert Dove to DT XOR DMA engine

With DT support for Marvell XOR DMA engine, make use of it on Dove.
Also remove the now redundant code in DT board init for xor engines.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

arch/arm/boot/dts/dove.dtsi

@@ -174,5 +174,47 @@
 			clocks = <&gate_clk 15>;
 			status = "okay";
 		};
+
+		xor0: dma-engine@60800 {
+			compatible = "marvell,orion-xor";
+			reg = <0x60800 0x100
+			       0x60a00 0x100>;
+			clocks = <&gate_clk 23>;
+			status = "okay";
+
+			channel0 {
+				interrupts = <39>;
+				dmacap,memcpy;
+				dmacap,xor;
+			};
+
+			channel1 {
+				interrupts = <40>;
+				dmacap,memset;
+				dmacap,memcpy;
+				dmacap,xor;
+			};
+		};
+
+		xor1: dma-engine@60900 {
+			compatible = "marvell,orion-xor";
+			reg = <0x60900 0x100
+			       0x60b00 0x100>;
+			clocks = <&gate_clk 24>;
+			status = "okay";
+
+			channel0 {
+				interrupts = <42>;
+				dmacap,memcpy;
+				dmacap,xor;
+			};
+
+			channel1 {
+				interrupts = <43>;
+				dmacap,memset;
+				dmacap,memcpy;
+				dmacap,xor;
+			};
+		};
 	};
 };