.mailmap: add an alias for Eric Engestrom

Reviewed-by: Eric Engestrom <eric@engestrom.ch>
diff --git a/.mailmap b/.mailmap
index 19c4163..744e79f 100644
--- a/.mailmap
+++ b/.mailmap
@@ -154,6 +154,7 @@
 Eric Anholt <eric@anholt.net> Eric Anholt <anholt@FreeBSD.org>
 
 Eric Engestrom <eric@engestrom.ch> <eric.engestrom@imgtec.com>
+Eric Engestrom <eric@engestrom.ch> <eric.engestrom@intel.com>
 
 Eugeni Dodonov <eugeni.dodonov@intel.com> <eugeni@mandriva.com>