mei: make device_type const

Make this const as it is only stored in the type field of a device
structure, which is const.
Done using Coccinelle.
Signed-off-by: NBhumika Goyal <bhumirks@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/mei/bus.c

@@ -845,7 +845,7 @@ static void mei_cl_bus_dev_release(struct device *dev)
 	kfree(cldev);
 }
 
-static struct device_type mei_cl_device_type = {
+static const struct device_type mei_cl_device_type = {
 	.release	= mei_cl_bus_dev_release,
 };