[SCSI] bfa: Added HBA diagnostics support.

- Added diagnostics sub-module to BFA.
- Implemented interface to perform memtest/loopback test
  and some other diagnostics tests.

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/bfa_modules.h
Simple merge

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

diff --cc drivers/scsi/bfa/bfa_svc.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/bfad_debugfs.c
Simple merge

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