net/i40e: fix mirror rule reset when port is closed

net/i40e: fix mirror rule reset when port is closed

When an i40e PF port is stopped, all mirror rules should be reserved.
But when an i40e PF port is closed, all mirror rules should be removed.
When a mirror rule is removed, its associated hardware and software
resource should also be removed.

Fixes: a4def5edf0fc ("i40e: enable port mirroring")
Cc: stable@dpdk.org
Signed-off-by: Wei Dai <wei.dai@intel.com>
Tested-by: Lijuan Tu <lijuanx.a.tu@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>