net: phy: marvell: Fix init function for m88e1145

Commit a058052c changed the generic phy_reset() to clear all bits in
BMCR. This inevitably clears the ANEG bit. m88e1145 requires any
change to ANEG bit to be followed by a software reset. This seems to
be different from other PHYs. Implement read-modify-write procedure
for this PHY init.

Signed-off-by: York Sun <york.sun@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

drivers/net/phy/marvell.c

@@ -482,7 +482,10 @@ static int m88e1145_config(struct phy_device *phydev)
 
 	genphy_config_aneg(phydev);
 
-	phy_reset(phydev);
+	/* soft reset */
+	reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);
+	reg |= BMCR_RESET;
+	phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, reg);
 
 	return 0;
 }