arm: dts: am335x: sync cpsw/mdio/phy with latest linux - drop phy_id

Synchronize CPSW/MDIO/PHY DT nodes with latest linux - replace deprecated
phy_id property with phy-handle.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Felix Brack <fb@ltec.ch>
Cc: Jean-Jacques Hiblot <jjhiblot@ti.com>
diff --git a/arch/arm/dts/am335x-rut.dts b/arch/arm/dts/am335x-rut.dts
index a5716a9..1452473 100644
--- a/arch/arm/dts/am335x-rut.dts
+++ b/arch/arm/dts/am335x-rut.dts
@@ -149,13 +149,8 @@
 };
 
 &cpsw_emac0 {
-	phy_id = <&davinci_mdio>, <1>;
-	phy-mode = "rmii";
-};
-
-&cpsw_emac1 {
-	phy_id = <&davinci_mdio>, <0>;
 	phy-mode = "rmii";
+	phy-handle = <&ethernet_phy>;
 };
 
 &davinci_mdio {