MAINTAINERS & files: Canonize the e-mails I use at files

From now on, I'll start using my @kernel.org as my development e-mail.

As such, let's remove the entries that point to the old
mchehab@s-opensource.com at MAINTAINERS file.

For the files written with a copyright with mchehab@s-opensource,
let's keep Samsung on their names, using mchehab+samsung@kernel.org,
in order to keep pointing to my employer, with sponsors the work.

For the files written before I join Samsung (on July, 4 2013),
let's just use mchehab@kernel.org.

For bug reports, we can simply point to just kernel.org, as
this will reach my mchehab+samsung inbox anyway.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Brian Warner <brian.warner@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
diff --git a/Documentation/doc-guide/parse-headers.rst b/Documentation/doc-guide/parse-headers.rst
index 96a0423..82a3e43b6 100644
--- a/Documentation/doc-guide/parse-headers.rst
+++ b/Documentation/doc-guide/parse-headers.rst
@@ -177,14 +177,14 @@
 ****
 
 
-Report bugs to Mauro Carvalho Chehab <mchehab@s-opensource.com>
+Report bugs to Mauro Carvalho Chehab <mchehab@kernel.org>
 
 
 COPYRIGHT
 *********
 
 
-Copyright (c) 2016 by Mauro Carvalho Chehab <mchehab@s-opensource.com>.
+Copyright (c) 2016 by Mauro Carvalho Chehab <mchehab+samsung@kernel.org>.
 
 License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>.