.mailmap: Run mailmapper and sync name locations

The patch is output from
scripts/mailmapper > tmp; mv tmp .mailmap
with moving <swarren@wwwdotorg.org> and <swarren@wwwdotorg.org> to the same
block with "This contributor prefers not to receive mails" description.

Signed-off-by: Michal Simek <michal.simek@amd.com>