phy: fix blackfin build failure

The build of blackfin defconfig is failing with the error:
error: 'struct mii_bus' has no member named 'phy_map'

A new API mdiobus_get_phy() was introduced and phy_map was removed but
it was not changed here.

Fixes: 7f854420 ("phy: Add API for {un}registering an mdio device to a bus.")
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: NSudip Mukherjee <sudip@vectorindia.org>
Acked-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/adi/bfin_mac.c

@@ -398,7 +398,8 @@ static int mii_probe(struct net_device *dev, int phy_mode)
 
 	/* search for connected PHY device */
 	for (i = 0; i < PHY_MAX_ADDR; ++i) {
-		struct phy_device *const tmp_phydev = lp->mii_bus->phy_map[i];
+		struct phy_device *const tmp_phydev =
+			mdiobus_get_phy(lp->mii_bus, i);
 
 		if (!tmp_phydev)
 			continue; /* no PHY here... */