scsi: lpfc: Add Buffer to Buffer credit recovery support

scsi: lpfc: Add Buffer to Buffer credit recovery support

Orabug: 27631736

Add Buffer to buffer credit recovery support to the driver.  This is a
negotiated feature with the peer that allows for both sides to detect
dropped RRDY's and FC Frames and recover credit.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 44fd7fe3dd2ce9dba873a0522e1eeab9ab5d5651)
Signed-off-by: Dick dkennedy <dick.kennedy@broadcom.com>
 Conflicts:
	drivers/scsi/lpfc/lpfc.h
	drivers/scsi/lpfc/lpfc_attr.c
	drivers/scsi/lpfc/lpfc_els.c
	drivers/scsi/lpfc/lpfc_sli4.h
Without the base nvme patch these all had to be modifed.
Signed-off-by: Dan Duval <dan.duval@oracle.com>
Reviewed-by: Jack Vogel <jack.vogel@oracle.com>