scsi: scsi_debug: Use scsi_device->type instead os sdebug_ptype where possible

scsi: scsi_debug: Use scsi_device->type instead os sdebug_ptype where possible

Devices of several types can be created for a single host. The module
device type should be used only when the devices are created.

Scsi_scan sets the device type initially to 0xff and sets the correct
type based in Inquiry results. This means that Inquiry must report
sdebug_ptype as long as scsi_device->type is not set (the limit 32
comes from the 5-bit length of the Peripheral Device Type in Inquiry).

Signed-off-by: Kai Mäkisara <Kai.Makisara@kolumbus.fi>
Link: https://lore.kernel.org/r/20250310155557.2872-5-Kai.Makisara@kolumbus.fi
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>