Restore VLAN filters after the link is brought down, and up - since all
filters are deleted from HW during the netdev link down routine.

Fixes: ed1f5b58 ("i40evf: remove VLAN filters on close")
Signed-off-by: NAkeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: NGeorge Kuruvinakunnel <george.kuruvinakunnel@intel.com>
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>