arm64: zynqmp: Describe TI phy as ethernet-phy-id

TI DP83867 is using strapping based on MIO pins. Tristate setup can influce
PHY address. That's why switch description with ethernet-phy-id compatible
string which enable calling reset. PHY itself setups phy address after
power up or reset. Reset description will be added in separate commit.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/52bf9ac0453d4e4896d8edd2618e684bb1ff6012.1662721547.git.michal.simek@amd.com
diff --git a/arch/arm/dts/zynqmp-zcu104-revA.dts b/arch/arm/dts/zynqmp-zcu104-revA.dts
index 1418cff..6df9a13 100644
--- a/arch/arm/dts/zynqmp-zcu104-revA.dts
+++ b/arch/arm/dts/zynqmp-zcu104-revA.dts
@@ -109,12 +109,18 @@
 	phy-mode = "rgmii-id";
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_gem3_default>;
-	phy0: ethernet-phy@c {
-		reg = <0xc>;
-		ti,rx-internal-delay = <0x8>;
-		ti,tx-internal-delay = <0xa>;
-		ti,fifo-depth = <0x1>;
-		ti,dp83867-rxctrl-strap-quirk;
+	mdio: mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		phy0: ethernet-phy@c {
+			#phy-cells = <1>;
+			compatible = "ethernet-phy-id2000.a231";
+			reg = <0xc>;
+			ti,rx-internal-delay = <0x8>;
+			ti,tx-internal-delay = <0xa>;
+			ti,fifo-depth = <0x1>;
+			ti,dp83867-rxctrl-strap-quirk;
+		};
 	};
 };