add .mailmap

Change-Id: I145a8f9e369e6c5f5ef962aa05b45d1388e6f55a
diff --git a/.mailmap b/.mailmap
new file mode 100644
index 0000000..63683a0
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1,6 @@
+Hui Su <huisu@google.com>
+Matthew Heaney <matthewjheaney@google.com>
+Neil Birkbeck <birkbeck@google.com>
+Patrik Carlsson <patrik2.carlsson@sonymobile.com>
+Roberto Alanis Baez <alanisbaez@google.com>
+Tom Finegan <tomfinegan@google.com> <tomfinegan@chromium.org>