[SCSI] qla4xxx: Temperature monitoring for ISP82XX core.

During watchdog, need to monitor temperature of ISP82XX core
and set device state to FAILED when temperature reaches
"Panic" level.

Signed-off-by: Mike Hernandez <michael.hernandez@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>