scsi: qla2xxx: Add 16.0GT for PCI String

This patch adds 16.0GT for readable display string.

Link: https://lore.kernel.org/r/20200226224022.24518-2-hmadhani@marvell.com


Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>