scsi: rts5208: Declare SCSI host template const

Make it explicit that the SCSI host template is not modified.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230322195515.1267197-78-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/staging/rts5208/rtsx.c

@@ -191,7 +191,7 @@ static int device_reset(struct scsi_cmnd *srb)
  * this defines our host template, with which we'll allocate hosts
  */
 
-static struct scsi_host_template rtsx_host_template = {
+static const struct scsi_host_template rtsx_host_template = {
 	/* basic userland interface stuff */
 	.name =				CR_DRIVER_NAME,
 	.proc_name =			CR_DRIVER_NAME,