arm64: dts: marvell: rename armada-ap806 XOR nodes

Node names should not contain an instance number, the unit address
serves to distinguish nodes of the same name. So rename the XOR nodes
to just xor@<address>.

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
[Thomas:
 - remove labels, they are really not needed for XOR engines.
 - remove the Fixes: tag, as this is not a fix.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm64/boot/dts/marvell/armada-ap806.dtsi

@@ -135,7 +135,7 @@ odmi: odmi@300000 {
 				marvell,spi-base = <128>, <136>, <144>, <152>;
 			};
 
-			xor0@400000 {
+			xor@400000 {
 				compatible = "marvell,mv-xor-v2";
 				reg = <0x400000 0x1000>,
 				      <0x410000 0x1000>;
@@ -143,7 +143,7 @@ xor0@400000 {
 				dma-coherent;
 			};
 
-			xor1@420000 {
+			xor@420000 {
 				compatible = "marvell,mv-xor-v2";
 				reg = <0x420000 0x1000>,
 				      <0x430000 0x1000>;
@@ -151,7 +151,7 @@ xor1@420000 {
 				dma-coherent;
 			};
 
-			xor2@440000 {
+			xor@440000 {
 				compatible = "marvell,mv-xor-v2";
 				reg = <0x440000 0x1000>,
 				      <0x450000 0x1000>;
@@ -159,7 +159,7 @@ xor2@440000 {
 				dma-coherent;
 			};
 
-			xor3@460000 {
+			xor@460000 {
 				compatible = "marvell,mv-xor-v2";
 				reg = <0x460000 0x1000>,
 				      <0x470000 0x1000>;