ar8031/8033/phy:enable autonegotiation for ar8031/8033

Function "genphy_parse_link()" used "if (mii_reg & BMSR_ANEGCAPABLE)" before
while "if (phydev->supported & SUPPORTED_Autoneg)" now.
So assign "phydev->supported" to "phydev->drv->features" for ar8031/8033
to enable autonegotiation.

Signed-off-by: Zhao Qiang <B45475@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

drivers/net/phy/atheros.c

@@ -13,6 +13,7 @@ static int ar8021_config(struct phy_device *phydev)
 	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
 	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x3D47);
 
+	phydev->supported = phydev->drv->features;
 	return 0;
 }