arm: dts: dra7: 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>
diff --git a/arch/arm/dts/dra76-evm.dts b/arch/arm/dts/dra76-evm.dts
index a1f289f..e3da17a 100644
--- a/arch/arm/dts/dra76-evm.dts
+++ b/arch/arm/dts/dra76-evm.dts
@@ -341,13 +341,13 @@
 };
 
 &cpsw_emac0 {
-	phy_id = <&davinci_mdio>, <2>;
+	phy-handle = <&dp83867_0>;
 	phy-mode = "rgmii-id";
 	dual_emac_res_vlan = <1>;
 };
 
 &cpsw_emac1 {
-	phy_id = <&davinci_mdio>, <3>;
+	phy-handle = <&dp83867_1>;
 	phy-mode = "rgmii-id";
 	dual_emac_res_vlan = <2>;
 };