scsi: xen-scsifront: Declare SCSI host template const

Make it explicit that the SCSI host template is not modified.
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230322195515.1267197-77-bvanassche@acm.orgSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/xen-scsifront.c

@@ -770,7 +770,7 @@ static void scsifront_sdev_destroy(struct scsi_device *sdev)
 	}
 }
 
-static struct scsi_host_template scsifront_sht = {
+static const struct scsi_host_template scsifront_sht = {
 	.module			= THIS_MODULE,
 	.name			= "Xen SCSI frontend driver",
 	.queuecommand		= scsifront_queuecommand,