[media] doc-rst: move DVB introduction to a separate file

Instead of keeping the introduction together with the
index, move it to a separate file, and add it via toctree
at the index.

The information there are outdated, so update it to point
to the right links.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/dvb-drivers/index.rst

-Linux Digital Video Broadcast (DVB) subsystem
-=============================================
-
-The main development site and CVS repository for these
-drivers is https://linuxtv.org.
-
-The developer mailing list linux-dvb is also hosted there,
-see https://linuxtv.org/lists.php. Please check
-the archive https://linuxtv.org/pipermail/linux-dvb/
-and the Wiki https://linuxtv.org/wiki/
-before asking newbie questions on the list.
-
-API documentation, utilities and test/example programs
-are available as part of the old driver package for Linux 2.4
-(linuxtv-dvb-1.0.x.tar.gz), or from CVS (module DVB).
-We plan to split this into separate packages, but it's not
-been done yet.
-
-https://linuxtv.org/downloads/
-
-What's inside this directory:
+.. -*- coding: utf-8; mode: rst -*-
 
-"avermedia.txt"
-contains detailed information about the
-Avermedia DVB-T cards. See also "bt8xx.txt".
+.. include:: <isonum.txt>
 
-"bt8xx.txt"
-contains detailed information about the
-various bt8xx based "budget" DVB cards.
-
-"cards.txt"
-contains a list of supported hardware.
-
-"ci.txt"
-contains detailed information about the
-CI module as part from TwinHan cards and Clones.
-
-"contributors.txt"
-is the who-is-who of DVB development.
-
-"faq.txt"
-contains frequently asked questions and their answers.
-
-"get_dvb_firmware"
-script to download and extract firmware for those devices
-that require it.
+#############################################
+Linux Digital Video Broadcast (DVB) subsystem
+#############################################
 
-"ttusb-dec.txt"
-contains detailed information about the
-TT DEC2000/DEC3000 USB DVB hardware.
+**Copyright** |copy| 2001-2016 : LinuxTV Developers
 
-"udev.txt"
-how to get DVB and udev up and running.
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU Free Documentation License, Version 1.1 or
+any later version published by the Free Software Foundation. A copy of
+the license is included in the chapter entitled "GNU Free Documentation
+License".
 
-"README.dvb-usb"
-contains detailed information about the DVB USB cards.
 
-"README.flexcop"
-contains detailed information about the
-Technisat- and Flexcop B2C2 drivers.
+.. toctree::
+	:maxdepth: 5
 
-Good luck and have fun!
+	intro

Documentation/media/dvb-drivers/intro.rst

+Introdution
+===========
+
+The main development site and GIT repository for these
+drivers is https://linuxtv.org.
+
+The DVB mailing list linux-dvb is hosted at vger. Please see
+http://vger.kernel.org/vger-lists.html#linux-media for details.
+
+There are also some other old lists hosted at https://linuxtv.org/lists.php. Please check the archive https://linuxtv.org/pipermail/linux-dvb/.
+
+The media subsystem Wiki is hosted at https://linuxtv.org/wiki/.
+Please check it before asking newbie questions on the list.
+
+API documentation is documented at the Kernel. You'll also find useful
+documentation at: https://linuxtv.org/docs.php.
+
+You may also find useful material at https://linuxtv.org/downloads/.
+
+In order to get firmware from proprietary drivers, there's a script at
+the kernel tree, at scripts/get_dvb_firmware.