Implement checks on what interfaces are eligible for supporting SRIOV VFs
when a member of an aggregate interface.

Implement unwind path for interfaces that become ineligible.

checks for the SRIOV LAG feature bit wrap most of the functional code for
manipulating resources that apply to this feature.  Utilize this bit
to track compliant aggregates.  Also flag any new entries into the
aggregate as not supporting SRIOV LAG for the time they are in the
non-compliant aggregate.

Once an aggregate has been flagged as non-compliant, only unpopulating the
aggregate and re-populating it will return SRIOV LAG functionality.
Reviewed-by: Daniel Machon <daniel.machon@microchip.com>
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>