[media] ov2659: Don't depend on subdev API

The subdev API is optional. No driver should depend on it.

Avoid compilation breakages if subdev API is not selected:

drivers/media/i2c/ov2659.c: In function ‘ov2659_get_fmt’:
drivers/media/i2c/ov2659.c:1054:3: error: implicit declaration of function ‘v4l2_subdev_get_try_format’ [-Werror=implicit-function-declaration]
mf = v4l2_subdev_get_try_format(sd, cfg, 0);
^
drivers/media/i2c/ov2659.c:1054:6: warning: assignment makes pointer from integer without a cast
mf = v4l2_subdev_get_try_format(sd, cfg, 0);
^
drivers/media/i2c/ov2659.c: In function ‘ov2659_set_fmt’:
drivers/media/i2c/ov2659.c:1129:6: warning: assignment makes pointer from integer without a cast
mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
^
drivers/media/i2c/ov2659.c: In function ‘ov2659_open’:
drivers/media/i2c/ov2659.c:1264:38: error: ‘struct v4l2_subdev_fh’ has no member named ‘pad’
v4l2_subdev_get_try_format(sd, fh->pad, 0);
^

Signed-off-by: Mauro Carvalho Chehab <[e-mail]>
Tested-by: Lad, Prabhakar <[e-mail]>

drivers/media/i2c/ov2659.c

···
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 	struct ov2659 *ov2659 = to_ov2659(sd);
-	struct v4l2_mbus_framefmt *mf;
 
 	dev_dbg(&client->dev, "ov2659_get_fmt\n");
 
 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+		struct v4l2_mbus_framefmt *mf;
+
 		mf = v4l2_subdev_get_try_format(sd, cfg, 0);
 		mutex_lock(&ov2659->lock);
 		fmt->format = *mf;
 		mutex_unlock(&ov2659->lock);
 		return 0;
+#else
+	return -ENOTTY;
+#endif
 	}
 
 	mutex_lock(&ov2659->lock);
···
 	mutex_lock(&ov2659->lock);
 
 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
 		mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
 		*mf = fmt->format;
+#else
+		return -ENOTTY;
+#endif
 	} else {
 		s64 val;
 
···
  * V4L2 subdev internal operations
  */
 
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
 static int ov2659_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
 {
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
···
 
 	return 0;
 }
+#endif
 
 static const struct v4l2_subdev_core_ops ov2659_subdev_core_ops = {
 	.log_status = v4l2_ctrl_subdev_log_status,
···
 	.set_fmt = ov2659_set_fmt,
 };
 
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
 static const struct v4l2_subdev_ops ov2659_subdev_ops = {
 	.core  = &ov2659_subdev_core_ops,
 	.video = &ov2659_subdev_video_ops,
···
 static const struct v4l2_subdev_internal_ops ov2659_subdev_internal_ops = {
 	.open = ov2659_open,
 };
+#endif
 
 static int ov2659_detect(struct v4l2_subdev *sd)
 {
···
 
 	sd = &ov2659->sd;
 	client->flags |= I2C_CLIENT_SCCB;
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
 	v4l2_i2c_subdev_init(sd, client, &ov2659_subdev_ops);
 
 	sd->internal_ops = &ov2659_subdev_internal_ops;
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
 		     V4L2_SUBDEV_FL_HAS_EVENTS;
+#endif
 
 #if defined(CONFIG_MEDIA_CONTROLLER)
 	ov2659->pad.flags = MEDIA_PAD_FL_SOURCE;