scsi: qedf: Check both the FCF and fabric ID before servicing clear virtual link

 - Check proper values before servicing CVL.

Signed-off-by: Chad Dupuis <cdupuis@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>