ice: link representors to PCI device

Link port representors to parent PCI device to benefit from
systemd defined naming scheme.

Example from ip tool:
 - without linking:
  eth0 ...
 - with linking:
  eth0 ...
  altname enp24s0f0npf0vf0

The port representor name is being shown in altname, because the name is
longer than IFNAMSIZ (16) limit. Altname can be used in ip tool.
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ice/ice_repr.c

@@ -338,6 +338,7 @@ static int ice_repr_add(struct ice_vf *vf)
 	repr->netdev->min_mtu = ETH_MIN_MTU;
 	repr->netdev->max_mtu = ICE_MAX_MTU;
 
+	SET_NETDEV_DEV(repr->netdev, ice_pf_to_dev(vf->pf));
 	err = ice_repr_reg_netdev(repr->netdev);
 	if (err)
 		goto err_netdev;