[media] doc-rst: better name the media books

The titles at the media books were misleading, and some books
were not numbered.

Rename the kAPI book to better reflect its contents, be more
consistent on the initial rst file for each book and better
name them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/index.rst

@@ -15,7 +15,7 @@ Contents:
 
    kernel-documentation
    media/media_uapi
-   media/media_drivers
+   media/media_kapi
    media/dvb-drivers/index
    media/v4l-drivers/index
 

Documentation/media/dvb-drivers/index.rst

@@ -2,9 +2,9 @@
 
 .. include:: <isonum.txt>
 
-#############################################
-Linux Digital Video Broadcast (DVB) subsystem
-#############################################
+##############################################
+Linux Digital TV driver-specific documentation
+##############################################
 
 **Copyright** |copy| 2001-2016 : LinuxTV Developers
 
@@ -17,6 +17,9 @@ License".
 
 .. toctree::
 	:maxdepth: 5
+	:numbered:
+	:caption: Table of Contents
+	:name: dvb_mastertoc
 
 	intro
 	avermedia

Documentation/media/media_kapi.rst

@@ -2,9 +2,9 @@
 
 .. include:: <isonum.txt>
 
-=========================
-Media subsystem core kAPI
-=========================
+===================================
+Media subsystem kernel internal API
+===================================
 
 **Copyright** |copy| 2009-2016 : LinuxTV Developers
 
@@ -16,6 +16,9 @@ License".
 
 .. toctree::
     :maxdepth: 5
+    :numbered:
+    :caption: Table of Contents
+    :name: kapi_mastertoc
 
     kapi/v4l2-framework
     kapi/v4l2-controls

Documentation/media/media_uapi.rst

@@ -2,9 +2,9 @@
 
 .. include:: <isonum.txt>
 
-##############################
-Linux Media Infrastructure API
-##############################
+########################################
+Linux Media Infrastructure userspace API
+########################################
 
 **Copyright** |copy| 2009-2016 : LinuxTV Developers
 
@@ -15,10 +15,10 @@ the license is included in the chapter entitled "GNU Free Documentation
 License".
 
 
-.. contents::
-
 .. toctree::
     :maxdepth: 5
+    :caption: Table of Contents
+    :name: uapi_mastertoc
 
     intro
     uapi/v4l/v4l2

Documentation/media/v4l-drivers/index.rst

@@ -2,9 +2,9 @@
 
 .. include:: <isonum.txt>
 
-###########################
-Video4Linux (V4L) subsystem
-###########################
+################################################
+Video4Linux (V4L)  driver-specific documentation
+################################################
 
 **Copyright** |copy| 1999-2016 : LinuxTV Developers
 
@@ -18,6 +18,8 @@ License".
 .. toctree::
 	:maxdepth: 5
 	:numbered:
+	:caption: Table of Contents
+	:name: v4l_mastertoc
 
 	fourcc
 	v4l-with-ir