ipq806x: ubnt,unifi-ac-hd: use on-board PHYs

Unlike many ipq806x devices, Ubiquiti UniFi AC HD (UAP-AC-HD, UAP301)
has no switch on board. Its two Ethernet ports are connected to Atheros
AR8033 PHYs. It is not appropriate to use fixed-link in this
configuration. Instead, configure the correct PHYs in the device tree
configuration to allow the at803x driver to load.

Signed-off-by: Mark Mentovai <mark@moxienet.com>
Build-tested: ipq806x/ubnt,unifi-ac-hd
Run-tested: ipq806x/ubnt,unifi-ac-hd

target/linux/ipq806x/files/arch/arm/boot/dts/qcom-ipq8064-unifi-ac-hd.dts

@@ -16,6 +16,8 @@
 		led-running = &led_dome_blue;
 		led-upgrade = &led_dome_blue;
 		mdio-gpio0 = &mdio0;
+		ethernet0 = &gmac1;
+		ethernet1 = &gmac2;
 	};
 
 	leds {
@@ -229,38 +231,36 @@
 
 	pinctrl-0 = <&mdio0_pins>;
 	pinctrl-names = "default";
+
+	phy4: ethernet-phy@4 {
+		reg = <4>;
 	};
 
-&gmac2 {
+	phy5: ethernet-phy@5 {
-	status = "okay";
+		reg = <5>;
-
-	phy-mode = "sgmii";
-	qcom,id = <2>;
-	qcom,emulation = <0>;
-	mdiobus = <&mdio0>;
-
-	mtd-mac-address = <&eeprom 0x0>;
-
-	fixed-link {
-		speed = <1000>;
-		full-duplex;
 	};
 };
 
 &gmac1 {
 	status = "okay";
 
+	mdiobus = <&mdio0>;
+	phy-handle = <&phy5>;
 	phy-mode = "sgmii";
 	qcom,id = <1>;
-	qcom,emulation = <0>;
-	mdiobus = <&mdio0>;
 
 	mtd-mac-address = <&eeprom 0x6>;
-
-	fixed-link {
-		speed = <1000>;
-		full-duplex;
 };
+
+&gmac2 {
+	status = "okay";
+
+	mdiobus = <&mdio0>;
+	phy-handle = <&phy4>;
+	phy-mode = "sgmii";
+	qcom,id = <2>;
+
+	mtd-mac-address = <&eeprom 0x0>;
 };
 
 &pcie0 {