.mailmap: Update my address

I left Intel, so make my personal address the canonical address.
diff --git a/.mailmap b/.mailmap
index 9c476c3..469599e 100644
--- a/.mailmap
+++ b/.mailmap
@@ -88,9 +88,10 @@
 Carl-Philip Hänsch <cphaensch@googlemail.com> Carl-Philip Haensch <carli@carli-laptop.(none)>
 Carl-Philip Hänsch <cphaensch@googlemail.com> Carl-Philip Haensch <Carl-Philip.Haensch@mailbox.tu-dresden.de>
 
-Chad Versace <chad.versace@intel.com> <chad@chad-versace.us>
-Chad Versace <chad.versace@intel.com> <Chad Versace chad@chad-versace.us>
-Chad Versace <chad.versace@intel.com> <chad.versace@linux.intel.com>
+Chad Versace <chad@kiwitree.net> <chad@chad-versace.us>
+Chad Versace <chad@kiwitree.net> <Chad Versace chad@chad-versace.us>
+Chad Versace <chad@kiwitree.net> <chad.versace@intel.com>
+Chad Versace <chad@kiwitree.net> <chad.versace@linux.intel.com>
 
 Chia-I Wu <olvaffe@gmail.com> <olv@lunarg.com>
 Chia-I Wu <olvaffe@gmail.com> Chia-Wu <olvaffe@gmail.com>