[SCSI] bfa: Add support to configure min/max bandwidth for a pcifn

- Added support to configure minimum bandwidth for a pcifn.
- Minimum bandwith is guaranteed at per queue level.
- Added support to update pcifn bandwidth dynamically without
  a server reboot.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --cc drivers/scsi/bfa/bfa_core.c
Simple merge

diff --cc drivers/scsi/bfa/bfa_defs.h
Simple merge

diff --cc drivers/scsi/bfa/bfa_ioc.c
Simple merge

diff --cc drivers/scsi/bfa/bfa_ioc.h
Simple merge

diff --cc drivers/scsi/bfa/bfad_bsg.c
Simple merge

diff --cc drivers/scsi/bfa/bfad_bsg.h
Simple merge

diff --cc drivers/scsi/bfa/bfi.h
Simple merge