scsi: st: Convert to SCSI bus methods

scsi: st: Convert to SCSI bus methods

The SCSI subsystem has implemented dedicated callbacks for probe, remove
and shutdown. Make use of them. This fixes a runtime warning about the
driver needing to be converted to the bus probe method.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/6da44731f77e8fdcd18e5f438643d58c98945db4.1766133330.git.u.kleine-koenig@baylibre.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>