arm64: mvebu: armada-7040-db: Enable 10GB port 0 / SFI (KR)

This patch enables the mvpp2 port 0 usage on the Armada 7k DB by setting
the correct PHY type (KR / SFI) for the COMPHY driver and enabling the
ethernet0 device node in the dts.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Stefan Chulski <stefanc@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>

arch/arm/dts/armada-7040-db.dts

@@ -169,8 +169,7 @@
 	};
 
 	phy2 {
-		phy-type = <PHY_TYPE_SGMII0>;
-		phy-speed = <PHY_SPEED_1_25G>;
+		phy-type = <PHY_TYPE_SFI>;
 	};
 
 	phy3 {
@@ -224,6 +223,11 @@
 	status = "okay";
 };
 
+&cpm_eth0 {
+	status = "okay";
+	phy-mode = "sfi"; /* lane-2 */
+};
+
 &cpm_eth1 {
 	status = "okay";
 	phy = <&phy0>;