ixgbe: Add boolean parameter to ixgbe_set_vmolr

Add a boolean parameter to ixgbe-set_vmolr so that the caller can
specify whether the pool should accept untagged packets.  Required
for a follow on patch to enable administrative configuration of port
VLAN for virtual functions.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>