[media] v4l2-ctrls.h: Fix some c:type references

Now that the uAPI is using c:type, let's use it here too.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index 3207449..beea0a2 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -973,9 +973,9 @@
  * v4l2_ctrl_replace - Function to be used as a callback to
  *	&struct v4l2_subscribed_event_ops replace\(\)
  *
- * @old: pointer to :ref:`struct v4l2_event <v4l2-event>` with the reported
+ * @old: pointer to struct &v4l2_event with the reported
  *	 event;
- * @new: pointer to :ref:`struct v4l2_event <v4l2-event>` with the modified
+ * @new: pointer to struct &v4l2_event with the modified
  *	 event;
  */
 void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new);
@@ -984,9 +984,9 @@
  * v4l2_ctrl_merge - Function to be used as a callback to
  *	&struct v4l2_subscribed_event_ops merge(\)
  *
- * @old: pointer to :ref:`struct v4l2_event <v4l2-event>` with the reported
+ * @old: pointer to struct &v4l2_event with the reported
  *	 event;
- * @new: pointer to :ref:`struct v4l2_event <v4l2-event>` with the merged
+ * @new: pointer to struct &v4l2_event with the merged
  *	 event;
  */
 void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new);