scsi: fcoe: Use netif_is_bond_master() instead of open code

'netdev->priv_flags & IFF_BONDING && netdev->flags & IFF_MASTER' is defined
as netif_is_bond_master() in netdevice.h. Replace it to clean up code.

Link: https://lore.kernel.org/r/20211015142006.540773-1-shjy180909@gmail.comReviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: MichelleJin <shjy180909@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/fcoe/fcoe.c

@@ -307,7 +307,7 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe,
 	}
 
 	/* Do not support for bonding device */
-	if (netdev->priv_flags & IFF_BONDING && netdev->flags & IFF_MASTER) {
+	if (netif_is_bond_master(netdev)) {
 		FCOE_NETDEV_DBG(netdev, "Bonded interfaces not supported\n");
 		return -EOPNOTSUPP;
 	}