media: v4l2-ctrls.h: fix wrong copy-and-paste comment

The __v4l2_ctrl_modify_range is the unlocked variant, so the comment about
taking a lock is obviously wrong.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

include/media/v4l2-ctrls.h

@@ -761,8 +761,8 @@ void v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed);
  * An error is returned if one of the range arguments is invalid for this
  * control type.
  *
- * This function assumes that the control handler is not locked and will
- * take the lock itself.
+ * The caller is responsible for acquiring the control handler mutex on behalf
+ * of __v4l2_ctrl_modify_range().
  */
 int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl,
 			     s64 min, s64 max, u64 step, s64 def);