arm64: dts: allwinner: H5: NanoPi Neo Plus2: phy-mode rgmii-id

Since commit bbc4d71d ("net: phy: realtek: fix rtl8211e rx/tx
delay config") network is broken on the NanoPi Neo Plus2.

This patch changes the phy-mode to use internal delays both for RX and TX
as has been done for other boards affected by the same commit.

Fixes: bbc4d71d ("net: phy: realtek: fix rtl8211e rx/tx delay config")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201129194512.1475586-1-xypron.glpk@gmx.de

arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo-plus2.dts

@@ -96,7 +96,7 @@ &emac {
 	pinctrl-0 = <&emac_rgmii_pins>;
 	phy-supply = <&reg_gmac_3v3>;
 	phy-handle = <&ext_rgmii_phy>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 	status = "okay";
 };