net: phy: marvell 88e151x: Fix handling of bare RGMII interface type

Commit 68e6ecadc5 ("net: phy: marvell 88e151x: Fix handling of RGMII
interface types") fixed the initialization of 88e151x phys, but made it
so that interfaces of type PHY_INTERFACE_MODE_RGMII had both RX and TX
delay bits cleared. The default (like in m88e1111s_config) is to have
both bits set.

Hence, this patch changes the behavior in the PHY_INTERFACE_MODE_RGMII
case so that both bits are set.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

drivers/net/phy/marvell.c

@@ -382,7 +382,8 @@ static int m88e1518_config(struct phy_device *phydev)
 
 		reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_88E151x_PHY_MSCR);
 		reg &= ~MIIM_88E151x_RGMII_RXTX_DELAY;
-		if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
+		if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||
+		    phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
 			reg |= MIIM_88E151x_RGMII_RXTX_DELAY;
 		else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)
 			reg |= MIIM_88E151x_RGMII_RX_DELAY;