net: phy: add qca8081 get_features

Reuse the at803x phy driver get_features excepting
adding 2500M capability.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/at803x.c

@@ -744,6 +744,15 @@ static int at803x_get_features(struct phy_device *phydev)
 	if (err)
 		return err;
 
+	if (phydev->drv->phy_id == QCA8081_PHY_ID) {
+		err = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_NG_EXTABLE);
+		if (err < 0)
+			return err;
+
+		linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->supported,
+				err & MDIO_PMA_NG_EXTABLE_2_5GBT);
+	}
+
 	if (phydev->drv->phy_id != ATH8031_PHY_ID)
 		return 0;
 
@@ -1653,6 +1662,7 @@ static struct phy_driver at803x_driver[] = {
 	.set_tunable		= at803x_set_tunable,
 	.set_wol		= at803x_set_wol,
 	.get_wol		= at803x_get_wol,
+	.get_features		= at803x_get_features,
 	.suspend		= genphy_suspend,
 	.resume			= genphy_resume,
 	.read_status		= qca808x_read_status,