scsi: transport: sas: spi: Fix kernel-doc for exported functions

Fix kernel-doc for sas_port_alloc(), sas_port_alloc_num(), and
spi_dv_device().  This allows them to be part of the SCSI driver-api
docbook.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20241212205217.597844-6-rdunlap@infradead.org


CC: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
CC: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>