The conversion from DocBook removed them. Re-add.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
.. code-block:: c
+ :caption: Example 3.4. Initiating streaming I/O with DMABUF file descriptors
struct v4l2_requestbuffers reqbuf;
.. code-block:: c
+ :caption: Example 3.5. Queueing DMABUF using single plane API
int buffer_queue(int v4lfd, int index, int dmafd)
{
.. code-block:: c
+ :caption: Example 3.6. Queueing DMABUF using multi plane API
int buffer_queue_mp(int v4lfd, int index, int dmafd[], int n_planes)
{