be2net: non-member vlan pkts not received in promiscous mode

While configuring promiscous mode, explicitly set the
VLAN_PROMISCOUS bit to make this happen. When switching off
promiscous mode, re-program the vids.

Signed-off-by: Xavier Selvin <xavier.selvin@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>