EDAC, amd64_edac: Update copyright and remove changelog

Git provides us all the changelogs anyway. So trim the comments section
here. Update the copyrights info while at it.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1443440593-2316-3-git-send-email-Aravind.Gopalakrishnan@amd.com


Signed-off-by: Borislav Petkov <bp@suse.de>