scsi: esas2r: 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/20230322195515.1267197-34-bvanassche@acm.orgSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/esas2r/esas2r_main.c

@@ -231,7 +231,7 @@ struct bin_attribute bin_attr_default_nvram = {
 	.write	= NULL
 };
 
-static struct scsi_host_template driver_template = {
+static const struct scsi_host_template driver_template = {
 	.module				= THIS_MODULE,
 	.show_info			= esas2r_show_info,
 	.name				= ESAS2R_LONGNAME,