Update .mailmap for ghanshyam emails

Change-Id: Ie6b6d6551b1ccee55c2ab739c1e869d7d9134d1e
diff --git a/.mailmap b/.mailmap
index 7898e69..fc74aa9 100644
--- a/.mailmap
+++ b/.mailmap
@@ -6,8 +6,9 @@
 Andrea Frittoli <andrea.frittoli@gmail.com> <andrea.frittoli@hpe.com>
 Daryl Walleck <daryl.walleck@rackspace.com> <daryl.walleck@rackspace.com>
 David Kranz <dkranz@redhat.com> David Kranz <david.kranz@qrclab.com>
-Ghanshyam <ghanshyam.mann@nectechnologies.in> <ghanshyam.mann@nectechnologies.in>
-Ghanshyam <ghanshyam.mann@nectechnologies.in> <ghanshyam.mann@nectechnologies.in>
+Ghanshyam Mann <gmann@ghanshyammann.com> <ghanshyam.mann@nectechnologies.in>
+Ghanshyam Mann <gmann@ghanshyammann.com> <ghanshyam.mann@india.nec.com>
+Ghanshyam Mann <gmann@ghanshyammann.com> <ghanshyammann@gmail.com>
 Jay Pipes <jaypipes@gmail.com> <jpipes@librebox.gateway.2wire.net>
 Joe Gordon <joe.gordon0@gmail.com> <jogo@cloudscaling.com>
 Ken'ichi Ohmichi <ken-oomichi@wx.jp.nec.com> <oomichi@mxs.nes.nec.co.jp>