scsi: scsi_devinfo: Add 'AIX VDASD' to blacklist

The AIX VDASD devices do support VPD pages, but implement only SPC. So
set BLIST_TRY_VPD_PAGES to correctly display the VPD information in
sysfs.

[mkp: typo]

Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>