net: phy: broadcom: drop brcm_phy_setbits() and use phy_set_bits() instead

Linux provides phy_set_bits() helper so let's drop brcm_phy_setbits() and
use phy_set_bits() in its place.
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20230622184721.24368-1-giulio.benetti@benettiengineering.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/phy/broadcom.c

@@ -664,17 +664,6 @@ static int bcm54616s_read_status(struct phy_device *phydev)
 	return err;
 }
 
-static int brcm_phy_setbits(struct phy_device *phydev, int reg, int set)
-{
-	int val;
-
-	val = phy_read(phydev, reg);
-	if (val < 0)
-		return val;
-
-	return phy_write(phydev, reg, val | set);
-}
-
 static int brcm_fet_config_init(struct phy_device *phydev)
 {
 	int reg, err, err2, brcmtest;
@@ -745,14 +734,14 @@ static int brcm_fet_config_init(struct phy_device *phydev)
 		goto done;
 
 	/* Enable auto MDIX */
-	err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_MISCCTRL,
+	err = phy_set_bits(phydev, MII_BRCM_FET_SHDW_MISCCTRL,
 			   MII_BRCM_FET_SHDW_MC_FAME);
 	if (err < 0)
 		goto done;
 
 	if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) {
 		/* Enable auto power down */
-		err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2,
+		err = phy_set_bits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2,
 				   MII_BRCM_FET_SHDW_AS2_APDE);
 	}