[media] Docbook: Fix comments at v4l2-mem2mem.h

Warning(.//include/media/v4l2-mem2mem.h:50): No description found for parameter 'lock'
Warning(.//include/media/v4l2-mem2mem.h:50): No description found for parameter 'unlock'
Warning(.//include/media/v4l2-mem2mem.h:167): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:177): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:188): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:197): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:206): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:215): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:226): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:235): No description found for parameter 'm2m_ctx'

Signed-off-by: Mauro Carvalho Chehab <[e-mail]>
Acked-by: Jonathan Corbet <[e-mail]>

include/media/v4l2-mem2mem.h

···
  *		v4l2_m2m_job_finish() (as if the transaction ended normally).
  *		This function does not have to (and will usually not) wait
  *		until the device enters a state when it can be stopped.
+ * @lock:	optional. Define a driver's own lock callback, instead of using
+ *		m2m_ctx->q_lock.
+ * @unlock:	optional. Define a driver's own unlock callback, instead of
+ *		using m2m_ctx->q_lock.
  */
 struct v4l2_m2m_ops {
 	void (*device_run)(void *priv);
···
 /**
  * v4l2_m2m_num_src_bufs_ready() - return the number of source buffers ready for
  * use
+ *
+ * @m2m_ctx: pointer to struct v4l2_m2m_ctx
  */
 static inline
 unsigned int v4l2_m2m_num_src_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx)
···
 /**
  * v4l2_m2m_num_src_bufs_ready() - return the number of destination buffers
  * ready for use
+ *
+ * @m2m_ctx: pointer to struct v4l2_m2m_ctx
  */
 static inline
 unsigned int v4l2_m2m_num_dst_bufs_ready(struct v4l2_m2m_ctx *m2m_ctx)
···
 /**
  * v4l2_m2m_next_src_buf() - return next source buffer from the list of ready
  * buffers
+ *
+ * @m2m_ctx: pointer to struct v4l2_m2m_ctx
  */
 static inline void *v4l2_m2m_next_src_buf(struct v4l2_m2m_ctx *m2m_ctx)
 {
···
 /**
  * v4l2_m2m_next_dst_buf() - return next destination buffer from the list of
  * ready buffers
+ *
+ * @m2m_ctx: pointer to struct v4l2_m2m_ctx
  */
 static inline void *v4l2_m2m_next_dst_buf(struct v4l2_m2m_ctx *m2m_ctx)
 {
···
 
 /**
  * v4l2_m2m_get_src_vq() - return vb2_queue for source buffers
+ *
+ * @m2m_ctx: pointer to struct v4l2_m2m_ctx
  */
 static inline
 struct vb2_queue *v4l2_m2m_get_src_vq(struct v4l2_m2m_ctx *m2m_ctx)
···
 
 /**
  * v4l2_m2m_get_dst_vq() - return vb2_queue for destination buffers
+ *
+ * @m2m_ctx: pointer to struct v4l2_m2m_ctx
  */
 static inline
 struct vb2_queue *v4l2_m2m_get_dst_vq(struct v4l2_m2m_ctx *m2m_ctx)
···
 /**
  * v4l2_m2m_src_buf_remove() - take off a source buffer from the list of ready
  * buffers and return it
+ *
+ * @m2m_ctx: pointer to struct v4l2_m2m_ctx
  */
 static inline void *v4l2_m2m_src_buf_remove(struct v4l2_m2m_ctx *m2m_ctx)
 {
···
 /**
  * v4l2_m2m_dst_buf_remove() - take off a destination buffer from the list of
  * ready buffers and return it
+ *
+ * @m2m_ctx: pointer to struct v4l2_m2m_ctx
  */
 static inline void *v4l2_m2m_dst_buf_remove(struct v4l2_m2m_ctx *m2m_ctx)
 {