arm: dts: ls1028a: enable internal RGMII delays for the LS1028A-QDS AR8035 PHY

There are no PCB trace delays on this board, so the PHY needs to enable
its internal ones in order to have a proper electrical connection to the
enetc MAC.

Fixes: b32e9a75 ("arm: dts: ls1028a updates for network interfaces")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>

arch/arm/dts/fsl-ls1028a-qds.dtsi

@@ -251,7 +251,7 @@
 
 &enetc1 {
 	status = "okay";
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	phy-handle = <&qds_phy0>;
 };