For single vector MSI-X allocations, we do not want to enable
multivector modes.  This patch makes the necessary corrections.
Signed-off-by: NMatt Carlson <mcarlson@broadcom.com>
Reviewed-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>