bna: Enable pure priority tagged packet reception and rxf uninit cleanup fix

Change Details:
	- Enable reception of pure priority tagged packets by default by
	turning on VLAN Id = 0
	- Clear the promiscuous mode, all multicast mode flags when
	bna_rxf_uninit is called

Signed-off-by: Debashis Dutt <ddutt@brocade.com>
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>