[SCSI] qla4xxx: Recreate chap data list during get chap operation

Recreate the chap data list during the get chap operation in
qla4xxx_get_chap_list().

Signed-off-by: Adheer Chandravanshi <adheer.chandravanshi@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>