net: dsa: mv88e6xxx: 2500Base-X uses the 1000Base-X SERDES

The 6390 has three different SERDES interface types. 2500Base-X is
implemented by the SGMII/1000Base-X SERDES. So power on/off the
correct SERDES.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/dsa/mv88e6xxx/serdes.c

@@ -375,10 +375,10 @@ static int mv88e6390_serdes_power_lane(struct mv88e6xxx_chip *chip, int port,
 	switch (cmode) {
 	case MV88E6XXX_PORT_STS_CMODE_SGMII:
 	case MV88E6XXX_PORT_STS_CMODE_1000BASE_X:
+	case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
 		return mv88e6390_serdes_power_sgmii(chip, lane, on);
 	case MV88E6XXX_PORT_STS_CMODE_XAUI:
 	case MV88E6XXX_PORT_STS_CMODE_RXAUI:
-	case MV88E6XXX_PORT_STS_CMODE_2500BASEX:
 		return mv88e6390_serdes_power_10g(chip, lane, on);
 	}