[media] DocBook: Add an error code session for LIRC interface

Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Documentation/DocBook/media/v4l/lirc_device_interface.xml

@@ -248,4 +248,8 @@ on working with the default settings initially.</para>
 </variablelist>
 
 </section>
+
+<section id="lirc_dev_errors">
+    &return-value;
+</section>
 </section>