ARM: dts: armada-xp: Fixup pcie DT warnings

PCIe has a range property, so the unit name should contain an address.
Take the opportunity to use the node label instead of the full name.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm/boot/dts/armada-xp-db.dts

@@ -108,39 +108,6 @@
 			};
 		};
 
-		pcie-controller {
-			status = "okay";
-
-			/*
-			 * All 6 slots are physically present as
-			 * standard PCIe slots on the board.
-			 */
-			pcie@1,0 {
-				/* Port 0, Lane 0 */
-				status = "okay";
-			};
-			pcie@2,0 {
-				/* Port 0, Lane 1 */
-				status = "okay";
-			};
-			pcie@3,0 {
-				/* Port 0, Lane 2 */
-				status = "okay";
-			};
-			pcie@4,0 {
-				/* Port 0, Lane 3 */
-				status = "okay";
-			};
-			pcie@9,0 {
-				/* Port 2, Lane 0 */
-				status = "okay";
-			};
-			pcie@10,0 {
-				/* Port 3, Lane 0 */
-				status = "okay";
-			};
-		};
-
 		internal-regs {
 			serial@12000 {
 				status = "okay";
@@ -248,6 +215,39 @@
 	};
 };
 
+&pciec {
+	status = "okay";
+
+	/*
+	 * All 6 slots are physically present as
+	 * standard PCIe slots on the board.
+	 */
+	pcie@1,0 {
+		/* Port 0, Lane 0 */
+		status = "okay";
+	};
+	pcie@2,0 {
+		/* Port 0, Lane 1 */
+		status = "okay";
+	};
+	pcie@3,0 {
+		/* Port 0, Lane 2 */
+		status = "okay";
+	};
+	pcie@4,0 {
+		/* Port 0, Lane 3 */
+		status = "okay";
+	};
+	pcie@9,0 {
+		/* Port 2, Lane 0 */
+		status = "okay";
+	};
+	pcie@10,0 {
+		/* Port 3, Lane 0 */
+		status = "okay";
+	};
+};
+
 &mdio {
 	phy0: ethernet-phy@0 {
 		reg = <0>;