docs-rst: doc-guide: split the kernel-documentation.rst contents

Having the kernel-documentation at the topmost level doesn't
allow generating a separate PDF file for it. Also, makes harder
to add extra contents. So, place it on a sub-dir.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/conf.py b/Documentation/conf.py
index ba38bcf..1ac958c 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -340,6 +340,8 @@
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
+    ('doc-guide/index', 'kernel-doc-guide.tex', 'Linux Kernel Documentation Guide',
+     'The kernel development community', 'manual'),
     ('admin-guide/index', 'linux-user.tex', 'Linux Kernel User Documentation',
      'The kernel development community', 'manual'),
     ('core-api/index', 'core-api.tex', 'The kernel core API manual',