io-mapping.txt: standardize document format
authorMauro Carvalho Chehab <mchehab@s-opensource.com>
Sun, 14 May 2017 17:32:35 +0000 (14:32 -0300)
committerJonathan Corbet <corbet@lwn.net>
Fri, 14 Jul 2017 19:51:38 +0000 (13:51 -0600)
commit9cf5116d5b10793b5105f962fa3d899b2d6cb5f6
treedfb38c3b07c8292c3f7da2dfe0c83c44e0859a80
parent45d85146269f711b8fbfdda017a033676caf29ab
io-mapping.txt: standardize document format

Each text file under Documentation follows a different
format. Some doesn't even have titles!

Change its representation to follow the adopted standard,
using ReST markups for it to be parseable by Sphinx:

- Add a title for the document and for API chapter;
- mark literal blocks;
- Adjust whitespacing.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Documentation/io-mapping.txt