.mailmap: add an alias for Tomeu Vizoso

Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
diff --git a/.mailmap b/.mailmap
index 86b243e..560251c 100644
--- a/.mailmap
+++ b/.mailmap
@@ -465,6 +465,8 @@
 Tom Stellard <thomas.stellard@amd.com> <tstellar@gmail.com>
 Tom Stellard <thomas.stellard@amd.com> Thomas Stellard <tom.stellard@amd.com>
 
+Tomeu Vizoso <tomeu.vizoso@collabora.com> <tomeu@tomeuvizoso.net>
+
 Tormod Volden <debian.tormod@gmail.com> <lists.tormod@gmail.com>
 
 Török Edwin <edwin+mesa@etorok.net> Török Edvin <edwintorok@gmail.com>