docs-rst: create an user's manual book

Place README, REPORTING-BUGS, SecurityBugs and kernel-parameters
on an user's manual book.

As we'll be numbering the user's manual, remove the manual
numbering from SecurityBugs.

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

Documentation/admin-guide/conf.py

@@ -0,0 +1,10 @@
+# -*- coding: utf-8; mode: python -*-
+
+project = 'Linux Kernel User Documentation'
+
+tags.add("subproject")
+
+latex_documents = [
+    ('index', 'linux-user.tex', 'Linux Kernel User Documentation',
+     'The kernel development community', 'manual'),
+]