DocBook/media: renamed xml documents to tmpl

DocBook makefile expects that the documents to be in tmpl extension,
since it has some preprocessing that it is done on it. This preprocessing
is not needed currently, but, as it removes the xml versions, we're
forced to rename anyway.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Documentation/DocBook/media-entities.xml → Documentation/DocBook/media-entities.tmpl

@@ -290,7 +290,7 @@
 <!ENTITY sub-dvbapi SYSTEM "dvb/dvbapi.xml">
 <!ENTITY sub-media SYSTEM "media.xml">
 <!ENTITY sub-media-entities SYSTEM "media-entities.xml">
-<!ENTITY sub-media-indices SYSTEM "media-indices.xml">
+<!ENTITY sub-media-indices SYSTEM "media-indices.tmpl">
 
 <!-- Function Reference -->
 <!ENTITY sub-close SYSTEM "v4l/func-close.xml">

Documentation/DocBook/media.xml → Documentation/DocBook/media.tmpl

 <?xml version="1.0"?>
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
 	"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
-<!ENTITY % media-entities SYSTEM "./media-entities.xml"> %media-entities;
-<!ENTITY media-indices SYSTEM "./media-indices.sgml">
+<!ENTITY % media-entities SYSTEM "./media-entities.tmpl"> %media-entities;
+<!ENTITY media-indices SYSTEM "./media-indices.tmpl">
 
 <!ENTITY eg                     "e.&nbsp;g.">
 <!ENTITY ie                     "i.&nbsp;e.">