ARM: dts: pico-imx7d: sync device tree with v5.3-rc6

Synchronize device tree with v5.3-rc6 label

Signed-off-by: Joris Offouga <offougajoris@gmail.com>
diff --git a/arch/arm/dts/imx7d-pico.dtsi b/arch/arm/dts/imx7d-pico.dtsi
index 33b308a..57391fc 100644
--- a/arch/arm/dts/imx7d-pico.dtsi
+++ b/arch/arm/dts/imx7d-pico.dtsi
@@ -93,7 +93,7 @@
 			  <&clks IMX7D_ENET1_TIME_ROOT_CLK>;
 	assigned-clock-parents = <&clks IMX7D_PLL_ENET_MAIN_100M_CLK>;
 	assigned-clock-rates = <0>, <100000000>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	phy-handle = <&ethphy0>;
 	fsl,magic-packet;
 	phy-reset-gpios = <&gpio6 11 GPIO_ACTIVE_LOW>;