ARM: dts: am335x-shc: get rid of phy_id property

The phy_id property is deprecated and phy-handle has to be used instead.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-shc.dts

@@ -206,7 +206,6 @@ &mac {
 	status = "okay";
 	slaves = <1>;
 	cpsw_emac0: slave@4a100200  {
-		phy_id = <&davinci_mdio>, <0>;
 		phy-mode = "mii";
 		phy-handle = <&ethernetphy0>;
 	};