The philmd@redhat.com email address will stop working on
2022-01-01, change it to my personal email address.

Update .mailmap in case anyone wants to send me an email
because of some past commit I authored.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211231000759.707519-1-philmd@redhat.com>