[media] V4L: JPEG class documentation corrections

This patch fixes following compilation warning:
Error: no ID for constraint linkend: v4l2-jpeg-chroma-subsampling.

and adds missing JPEG control class at the Table A.58.

Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
index 0a4b90fcf2da..e3d5afcdafbb 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
@@ -284,6 +284,13 @@ These controls are described in <xref
             processing controls. These controls are described in <xref
             linkend="image-process-controls" />.</entry>
           </row>
+          <row>
+            <entry><constant>V4L2_CTRL_CLASS_JPEG</constant></entry>
+            <entry>0x9d0000</entry>
+            <entry>The class containing JPEG compression controls.
+These controls are described in <xref
+                linkend="jpeg-controls" />.</entry>
+          </row>
         </tbody>
       </tgroup>
     </table>