[media] ov9640: fix OmniVision OV9640 sensor driver's priv data retrieving

OmniVision OV9640 driver wasn't requesting properly its private data
on I2C remove and video_probe functions. It was retrieving the V4L2
subdev struct address instead of priv struct's one. This patch fixes
such problem.

Signed-off-by: David Cohen <dacohen@gmail.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/ov9640.c b/drivers/media/video/ov9640.c
index c6d8e8a..53d88a2 100644
--- a/drivers/media/video/ov9640.c
+++ b/drivers/media/video/ov9640.c
@@ -651,7 +651,8 @@
 static int ov9640_video_probe(struct soc_camera_device *icd,
 				struct i2c_client *client)
 {
-	struct ov9640_priv *priv = i2c_get_clientdata(client);
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct ov9640_priv *priv = to_ov9640_sensor(sd);
 	u8		pid, ver, midh, midl;
 	const char	*devname;
 	int		ret = 0;
@@ -788,7 +789,8 @@
 
 static int ov9640_remove(struct i2c_client *client)
 {
-	struct ov9640_priv *priv = i2c_get_clientdata(client);
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct ov9640_priv *priv = to_ov9640_sensor(sd);
 
 	kfree(priv);
 	return 0;