scsi: qedi: Skip firmware connection termination for PCI shutdown handler

scsi: qedi: Skip firmware connection termination for PCI shutdown handler

In boot from SAN scenario when qedi PCI shutdown handler is called with
active iSCSI sessions, sometimes target takes too long time to respond to
firmware connection termination request.  Instead skip sending termination
ramrod and progress with unload path.

Link: https://lore.kernel.org/r/20200908095657.26821-3-mrangankar@marvell.com
Signed-off-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>