.mailmap: Fixup my email address

Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
diff --git a/.mailmap b/.mailmap
index c614dec..9c476c3 100644
--- a/.mailmap
+++ b/.mailmap
@@ -138,6 +138,8 @@
 
 Dylan Baker <dylanx.c.baker@intel.com> <baker.dylan.c@gmail.com>
 
+Edward O'Callaghan <funfunctor@folklore1984.net> <eocallaghan@alterapraxis.com>
+
 Emeric Grange <emeric.grange@gmail.com> Emeric <emeric.grange@gmail.com>
 
 Emil Velikov <emil.l.velikov@gmail.com> <emil.velikov@collabora.com>