[media] exynos4-is: Initialize the ISP subdev sd->owner field

Set the subdevs owner module so the exynos4_fimc_is module cannot
be unloaded when the FIMC-IS driver is in use.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/platform/exynos4-is/fimc-isp.c

@@ -672,6 +672,8 @@ int fimc_isp_subdev_create(struct fimc_isp *isp)
 	mutex_init(&isp->subdev_lock);
 
 	v4l2_subdev_init(sd, &fimc_is_subdev_ops);
+
+	sd->owner = THIS_MODULE;
 	sd->grp_id = GRP_ID_FIMC_IS;
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	snprintf(sd->name, sizeof(sd->name), "FIMC-IS-ISP");