.mailmap: add an alias for Emmanuel Gil Peyrot

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/1999>
diff --git a/.mailmap b/.mailmap
index 46b2bb2..36da788 100644
--- a/.mailmap
+++ b/.mailmap
@@ -201,6 +201,8 @@
 Emil Velikov <emil.l.velikov@gmail.com> <emil.velikov@gmail.com>
 Emil Velikov <emil.l.velikov@gmail.com> <emmil.velikov@collabora.com>
 
+Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> <emmanuel.peyrot@collabora.com>
+
 Eric Anholt <eric@anholt.net> Eric Anholt <anholt@FreeBSD.org>
 
 Eric Engestrom <eric@engestrom.ch> <eric.engestrom@imgtec.com>