Always set the affinity hint, even if #cpu != #vq.

Handle the case where #cpu > #vq (including when #cpu % #vq != 0) and
when #vq > #cpu (including when #vq % #cpu != 0).
Signed-off-by: NCaleb Raitto <caraitto@google.com>
Signed-off-by: NWillem de Bruijn <willemb@google.com>
Acked-by: NJon Olson <jonolson@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>