ixgbe: update perfect filter framework to support retaining filters

This change is meant to update the internal framework of ixgbe so that
perfect filters can be stored and tracked via software.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>