doc-rst: linux_tv: convert lots of consts to references

There were lots of consts at the media docbook that should
be, instead, references. Convert the ones that can easily
be done by an automatic script.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/Documentation/linux_tv/media/v4l/vidioc-g-dv-timings.rst b/Documentation/linux_tv/media/v4l/vidioc-g-dv-timings.rst
index 8a7fa1c..cc7cf06 100644
--- a/Documentation/linux_tv/media/v4l/vidioc-g-dv-timings.rst
+++ b/Documentation/linux_tv/media/v4l/vidioc-g-dv-timings.rst
@@ -36,8 +36,8 @@
 ===========
 
 To set DV timings for the input or output, applications use the
-``VIDIOC_S_DV_TIMINGS`` ioctl and to get the current timings,
-applications use the ``VIDIOC_G_DV_TIMINGS`` ioctl. The detailed timing
+:ref:`VIDIOC_S_DV_TIMINGS <VIDIOC_G_DV_TIMINGS>` ioctl and to get the current timings,
+applications use the :ref:`VIDIOC_G_DV_TIMINGS` ioctl. The detailed timing
 information is filled in using the structure struct
 :ref:`v4l2_dv_timings <v4l2-dv-timings>`. These ioctls take a
 pointer to the struct :ref:`v4l2_dv_timings <v4l2-dv-timings>`
@@ -59,7 +59,7 @@
 :ref:`Generic Error Codes <gen-errors>` chapter.
 
 EINVAL
-    This ioctl is not supported, or the ``VIDIOC_S_DV_TIMINGS``
+    This ioctl is not supported, or the :ref:`VIDIOC_S_DV_TIMINGS <VIDIOC_G_DV_TIMINGS>`
     parameter was unsuitable.
 
 ENODATA