V4L/DVB (9713): gspca: Add the ov534 webcams in the gspca documentation.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 0d233c7..7f8b798 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -1923,6 +1923,9 @@
 {
 	struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
 
+	gspca_dev->present = 0;
+	gspca_dev->streaming = 0;
+
 	usb_set_intfdata(intf, NULL);
 
 	/* release the device */