net: phy: marvell10g: Use linkmode_set_bit helper instead of __set_bit

Cosmetic patch making use of helpers dedicated to linkmodes handling.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/marvell10g.c

@@ -253,7 +253,7 @@ static int mv3310_get_features(struct phy_device *phydev)
 			return val;
 
 		if (val & MDIO_AN_STAT1_ABLE)
-			__set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
+			linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
 					 phydev->supported);
 	}