net: phy: add support to get Master-Slave configuration

Add support to Master-Slave configuration and state
Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/phy/mxl-gpy.c

@@ -295,6 +295,9 @@ static void gpy_update_interface(struct phy_device *phydev)
 				   ret);
 		break;
 	}
+
+	if (phydev->speed == SPEED_2500 || phydev->speed == SPEED_1000)
+		genphy_read_master_slave(phydev);
 }
 
 static int gpy_read_status(struct phy_device *phydev)