[SCSI] qla2xxx: add support for NPIV

Following patch adds support for NPIV (N-Port ID Virtualization) to the
qla2xxx.

- supported within switched-fabric topologies only.
- supports up to 63 virtual ports on each physical port.

Signed-off-by: Seokmann Ju <seokmann.ju@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
13 files changed