i40iw: Use vector when creating CQs

Assign each CEQ vector to a different CPU when possible, then
when creating a CQ, use the vector for the CEQ id. This
allows completion work to be distributed over multiple cores.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>