scsi: make device_type const

Make these const as they are only stored in the type field of a device
structure, which is const.
Done using Coccinelle.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/fcoe/fcoe_sysfs.c

@@ -659,13 +659,13 @@ static void fcoe_fcf_device_release(struct device *dev)
 	kfree(fcf);
 }
 
-static struct device_type fcoe_ctlr_device_type = {
+static const struct device_type fcoe_ctlr_device_type = {
 	.name = "fcoe_ctlr",
 	.groups = fcoe_ctlr_attr_groups,
 	.release = fcoe_ctlr_device_release,
 };
 
-static struct device_type fcoe_fcf_device_type = {
+static const struct device_type fcoe_fcf_device_type = {
 	.name = "fcoe_fcf",
 	.groups = fcoe_fcf_attr_groups,
 	.release = fcoe_fcf_device_release,