ARM: dts: imx: imx8qm-rom7720: Fix AR8031 phy-mode

Fixed wrong PHY Interface Mode

    As per kernel commit 0672d22a1924 ("ARM: dts: imx: Fix the AR803X phy-mode)
    the correct phy-mode should be "rgmii-id", so fix it accordingly
    to fix the Ethernet regression.

    This problem has been exposed by commit:

    commit 13114f38e2ccea9386726d8b9831dfc310589548

    Fix the phy-mode accordingly to fix the regression.

Signed-off-by: Oliver Graute <oliver.graute@kococonnector.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Vladimir Oltean <vladimir.oltean@nxp.com>
diff --git a/arch/arm/dts/imx8qm-rom7720-a1.dts b/arch/arm/dts/imx8qm-rom7720-a1.dts
index 5f9ac95..d1f2fff 100644
--- a/arch/arm/dts/imx8qm-rom7720-a1.dts
+++ b/arch/arm/dts/imx8qm-rom7720-a1.dts
@@ -293,7 +293,7 @@
 &fec1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_fec1>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	phy-handle = <&ethphy0>;
 	fsl,ar8031-phy-fixup;
 	fsl,magic-packet;
@@ -318,7 +318,7 @@
 &fec2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_fec2>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	phy-handle = <&ethphy1>;
 	fsl,ar8031-phy-fixup;
 	fsl,magic-packet;