scsi: oak: Declare SCSI host template const

Make it explicit that the SCSI host template is not modified.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230322195515.1267197-28-bvanassche@acm.orgSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/arm/oak.c

@@ -100,7 +100,7 @@ printk("reading %p len %d\n", addr, len);
 
 #include "../NCR5380.c"
 
-static struct scsi_host_template oakscsi_template = {
+static const struct scsi_host_template oakscsi_template = {
 	.module			= THIS_MODULE,
 	.name			= "Oak 16-bit SCSI",
 	.info			= oakscsi_info,