scsi: core: Pass a struct scsi_driver to scsi_{,un}register_driver()

scsi: core: Pass a struct scsi_driver to scsi_{,un}register_driver()

This aligns with what other subsystems do, reduces boilerplate a bit for
device drivers and is less error prone.

Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/ac17fdea58e384cb514c639306d48ce0005820b0.1766133330.git.u.kleine-koenig@baylibre.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>