scsi: qla2xxx: Add support for multiple fwdump templates/segments

This patch adds multipe firmware dump template and segments support for
ISP27XX/28XX.

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