MAINTAINERS: Change philmd's email address

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>
diff --git a/.mailmap b/.mailmap
index c45d1c5..5113f55 100644
--- a/.mailmap
+++ b/.mailmap
@@ -63,6 +63,7 @@
 Paul Burton <paulburton@kernel.org> <paul.burton@imgtec.com>
 Paul Burton <paulburton@kernel.org> <paul@archlinuxmips.org>
 Paul Burton <paulburton@kernel.org> <pburton@wavecomp.com>
+Philippe Mathieu-Daudé <f4bug@amsat.org> <philmd@redhat.com>
 Stefan Brankovic <stefan.brankovic@syrmia.com> <stefan.brankovic@rt-rk.com.com>
 Yongbok Kim <yongbok.kim@mips.com> <yongbok.kim@imgtec.com>