ARM: dts: armada-38x: add reference to ETH connectors for A385-AP

This commit adds some comments to the Armada 385 AP Device Tree
description to indicate which Ethernet interface matches which
physical connector on the board.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm/boot/dts/armada-385-db-ap.dts

@@ -134,18 +134,21 @@ xhci0_vbus_pins: xhci0-vbus-pins {
 				};
 			};
 
+			/* CON3 */
 			ethernet@30000 {
 				status = "okay";
 				phy = <&phy2>;
 				phy-mode = "sgmii";
 			};
 
+			/* CON2 */
 			ethernet@34000 {
 				status = "okay";
 				phy = <&phy1>;
 				phy-mode = "sgmii";
 			};
 
+			/* CON4 */
 			ethernet@70000 {
 				pinctrl-names = "default";