ARM: dts: am335x-baltos: use phy-phandle declarations

phy-phandle is now a preferred method to reference a PHY device.
Especially in regards to cpsw it enables PHY specific settings like
max-speed etc. being specified in DTS.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/boot/dts/am335x-baltos.dtsi b/arch/arm/boot/dts/am335x-baltos.dtsi
index 09b9541..efb5eae 100644
--- a/arch/arm/boot/dts/am335x-baltos.dtsi
+++ b/arch/arm/boot/dts/am335x-baltos.dtsi
@@ -364,11 +364,14 @@
 };
 
 &davinci_mdio {
+	status = "okay";
 	pinctrl-names = "default", "sleep";
 	pinctrl-0 = <&davinci_mdio_default>;
 	pinctrl-1 = <&davinci_mdio_sleep>;
 
-	status = "okay";
+	phy1: ethernet-phy@1 {
+		reg = <7>;
+	};
 };
 
 &mmc1 {