[SCSI] bfa: PBC vport create

This patch enables creating PBC vport.
During fcs init, fcs will read PBC vport using bfa iocfc API and invoke fcb
callback to add the pbc vport entries into a list. The pbc vport list will be
traversed in the subsequent pci probe process and vport will be created using
fc transport provided vport create function.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>