[media] convert drivers/media/* to use module_i2c_driver()

This patch converts the drivers in drivers/media/* to use the
module_i2_driver() macro which makes the code smaller and a bit simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Heungjun Kim <riverful.kim@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Andrew Chew <achew@nvidia.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Michael Grzeschik <m.grzeschik@pengutronix.de>
Cc: Johannes Obermaier <johannes.obermaier@gmail.com>
Cc: Steven Toth <stoth@kernellabs.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/wm8739.c b/drivers/media/video/wm8739.c
index a22f765..3bb99e9 100644
--- a/drivers/media/video/wm8739.c
+++ b/drivers/media/video/wm8739.c
@@ -291,15 +291,4 @@
 	.id_table	= wm8739_id,
 };
 
-static __init int init_wm8739(void)
-{
-	return i2c_add_driver(&wm8739_driver);
-}
-
-static __exit void exit_wm8739(void)
-{
-	i2c_del_driver(&wm8739_driver);
-}
-
-module_init(init_wm8739);
-module_exit(exit_wm8739);
+module_i2c_driver(wm8739_driver);