net: phy: don't use 10BaseT/half as default in genphy_read_status

If link partner and we can't agree on any mode, then it doesn't make
sense to pretend we would have agreed on 10/half. Therefore set a
proper default.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/phy_device.c

@@ -1785,8 +1785,8 @@ int genphy_read_status(struct phy_device *phydev)
 
 		mii_lpa_mod_linkmode_lpa_t(phydev->lp_advertising, lpa);
 
-		phydev->speed = SPEED_10;
-		phydev->duplex = DUPLEX_HALF;
+		phydev->speed = SPEED_UNKNOWN;
+		phydev->duplex = DUPLEX_UNKNOWN;
 		phydev->pause = 0;
 		phydev->asym_pause = 0;