ARM: dts: sun8i: h3: bpi-m2-plus: Fix address for external RGMII Ethernet PHY

The external RTL8211E RGMII Ethernet PHY is configured via external
resistors to use the address 0x1. The 0x0 address is a broadcast address
for this family of PHYs, and should not be used explicitly.

Fixes: 8c7ba536e709 ("ARM: sun8i: bananapi-m2-plus: Enable dwmac-sun8i")
Fixes: 4904337fe34f ("ARM: dts: sunxi: Restore EMAC changes (boards)")
Acked-by: Maxime Ripard <[e-mail]>
Signed-off-by: Chen-Yu Tsai <[e-mail]>

arch/arm/boot/dts/sun8i-h3-bananapi-m2-plus.dts

···
 &external_mdio {
 	ext_rgmii_phy: ethernet-phy@1 {
 		compatible = "ethernet-phy-ieee802.3-c22";
-		reg = <0>;
+		reg = <1>;
 	};
 };