scsi: core: Add function return kernel-doc for 2 functions

scsi: core: Add function return kernel-doc for 2 functions

Add missing function return values to prevent kernel-doc warnings:

scsi.h:75: warning: No description found for return value of 'scsi_status_is_check_condition'
scsi.h:202: warning: No description found for return value of 'scsi_status_is_good'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20240408025425.18778-7-rdunlap@infradead.org
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>