V4L/DVB: V4L Doc: document V4L2_CAP_RDS_OUTPUT capability

We forgot to add this capability to the QUERYCAP documentation.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/Documentation/DocBook/v4l/vidioc-querycap.xml b/Documentation/DocBook/v4l/vidioc-querycap.xml
index 6ab7e25..d499da9 100644
--- a/Documentation/DocBook/v4l/vidioc-querycap.xml
+++ b/Documentation/DocBook/v4l/vidioc-querycap.xml
@@ -184,7 +184,7 @@
 	  <row>
 	    <entry><constant>V4L2_CAP_RDS_CAPTURE</constant></entry>
 	    <entry>0x00000100</entry>
-	    <entry>The device supports the <link linkend="rds">RDS</link> interface.</entry>
+	    <entry>The device supports the <link linkend="rds">RDS</link> capture interface.</entry>
 	  </row>
 	  <row>
 	    <entry><constant>V4L2_CAP_VIDEO_OUTPUT_OVERLAY</constant></entry>
@@ -206,6 +206,11 @@
 hardware frequency seeking.</entry>
 	  </row>
 	  <row>
+	    <entry><constant>V4L2_CAP_RDS_OUTPUT</constant></entry>
+	    <entry>0x00000800</entry>
+	    <entry>The device supports the <link linkend="rds">RDS</link> output interface.</entry>
+	  </row>
+	  <row>
 	    <entry><constant>V4L2_CAP_TUNER</constant></entry>
 	    <entry>0x00010000</entry>
 	    <entry>The device has some sort of tuner to