V4L/DVB (6807): fix debug enable

The changes at vivi_template make debug option to not work properly.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 0b5c142..889e661 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -1250,7 +1250,7 @@
 module_param(n_devs, int, 0);
 MODULE_PARM_DESC(n_devs, "number of video devices to create");
 
-module_param_named(debug, vivi.debug, int, 0644);
+module_param_named(debug, vivi_template.debug, int, 0444);
 MODULE_PARM_DESC(debug, "activates debug info");
 
 module_param(vid_limit, int, 0644);