i40e: improve VF MAC filters accounting

commit b99dd770 upstream.

When adding new VM MAC, driver checks only *active* filters in
vsi->mac_filter_hash. Each MAC, even in non-active state is using resources.

To determine number of MACs VM uses, count VSI filters in *any* state.

Add i40e_count_all_filters() to simply count all filters, and rename
i40e_count_filters() to i40e_count_active_filters() to avoid ambiguity.

Fixes: cfb1d572 ("i40e: Add ensurance of MacVlan resources for every trusted VF")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>