net: phy: at803x: use genphy_config_init()

Use the generic bits from genphy_config_init() instead of implementing
the same functionality again.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/at803x.c

@@ -144,41 +144,11 @@ static int at803x_resume(struct phy_device *phydev)
 
 static int at803x_config_init(struct phy_device *phydev)
 {
-	int val;
 	int ret;
-	u32 features;
-
-	features = SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_AUI |
-		   SUPPORTED_FIBRE | SUPPORTED_BNC;
-
-	val = phy_read(phydev, MII_BMSR);
-	if (val < 0)
-		return val;
-
-	if (val & BMSR_ANEGCAPABLE)
-		features |= SUPPORTED_Autoneg;
-	if (val & BMSR_100FULL)
-		features |= SUPPORTED_100baseT_Full;
-	if (val & BMSR_100HALF)
-		features |= SUPPORTED_100baseT_Half;
-	if (val & BMSR_10FULL)
-		features |= SUPPORTED_10baseT_Full;
-	if (val & BMSR_10HALF)
-		features |= SUPPORTED_10baseT_Half;
-
-	if (val & BMSR_ESTATEN) {
-		val = phy_read(phydev, MII_ESTATUS);
-		if (val < 0)
-			return val;
-
-		if (val & ESTATUS_1000_TFULL)
-			features |= SUPPORTED_1000baseT_Full;
-		if (val & ESTATUS_1000_THALF)
-			features |= SUPPORTED_1000baseT_Half;
-	}
 
-	phydev->supported = features;
-	phydev->advertising = features;
+	ret = genphy_config_init(phydev);
+	if (ret < 0)
+		return ret;
 
 	if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
 		ret = phy_write(phydev, AT803X_DEBUG_ADDR,