Add .mailmap

Change-Id: I2c39c96abbe0d689b31c84898b84fad031415bb0
diff --git a/.mailmap b/.mailmap
new file mode 100644
index 0000000..2dfeff7
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1 @@
+Viktor Kaufmann <viktor.kaufman@sap.com> d048645 <viktor.kaufman@sap.com>