ixgbe/fm10k: Record macvlan stats instead of Rx queue for macvlan offloaded rings

We shouldn't be recording the Rx queue on macvlan offloaded frames since
the macvlan is normally brought up as a single queue device, and it will
trigger warnings for RPS if we have recorded queue IDs larger than the
"real_num_rx_queues" value recorded for the device.

Instead we should be recording the macvlan statistics since we are
bypassing the normal macvlan statistics that would have been generated by
the receive path.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>