Revert "net: phy: dp83867: perform soft reset and retain established link"

This reverts commit da9ef50.

This fixes a regression in which the link would come up, but no
communication was possible.

The reverted commit was also removing a comment about
DP83867_PHYCR_FORCE_LINK_GOOD, this is not added back in this commits
since it seems that this is unrelated to the original code change.

Closes: https://lore.kernel.org/all/[email protected]/
Fixes: da9ef50 ("net: phy: dp83867: perform soft reset and retain established link")
Signed-off-by: Francesco Dolcini <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Reviewed-by: Praneeth Bajjuri <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: dolcini

drivers/net/phy/dp83867.c

@@ -936,7 +936,7 @@ static int dp83867_phy_reset(struct phy_device *phydev)
 {
 	int err;
 
-	err = phy_write(phydev, DP83867_CTRL, DP83867_SW_RESTART);
+	err = phy_write(phydev, DP83867_CTRL, DP83867_SW_RESET);
 	if (err < 0)
 		return err;