net: ethernet: sun4i-emac: Support phy-handle property for finding PHYs

The sun4i-emac uses the "phy" property to find the PHY it's supposed to
use. This property was deprecated in favor of "phy-handle" in commit
8c5b0944 ("dt-bindings: net: sun4i-emac: Convert the binding to a
schemas").

Add support for this new property name, and fall back to the old one in
case the device tree hasn't been updated.
Signed-off-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/allwinner/sun4i-emac.c

@@ -860,7 +860,9 @@ static int emac_probe(struct platform_device *pdev)
 		goto out_clk_disable_unprepare;
 	}
 
-	db->phy_node = of_parse_phandle(np, "phy", 0);
+	db->phy_node = of_parse_phandle(np, "phy-handle", 0);
+	if (!db->phy_node)
+		db->phy_node = of_parse_phandle(np, "phy", 0);
 	if (!db->phy_node) {
 		dev_err(&pdev->dev, "no associated PHY\n");
 		ret = -ENODEV;