i40e: make string references to q be queue

This cleans up strings for consistency, q is replaced with queue.

Change-ID: Ia5f9dfae9af261f4c24485854264e02363729cf3
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>