mailmap: add entries for Simon Wunderlich

Map the defunc mail addresses to the currently used mail address (listed in
MAINTAINERS).

Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

.mailmap

@@ -642,6 +642,11 @@ Simona Vetter <simona.vetter@ffwll.ch> <daniel@biene.ffwll.ch>
 Simon Horman <horms@kernel.org> <simon.horman@corigine.com>
 Simon Horman <horms@kernel.org> <simon.horman@netronome.com>
 Simon Kelley <simon@thekelleys.org.uk>
+Simon Wunderlich <sw@simonwunderlich.de> <simon.wunderlich@open-mesh.com>
+Simon Wunderlich <sw@simonwunderlich.de> <simon.wunderlich@s2003.tu-chemnitz.de>
+Simon Wunderlich <sw@simonwunderlich.de> <simon.wunderlich@saxnet.de>
+Simon Wunderlich <sw@simonwunderlich.de> <simon@open-mesh.com>
+Simon Wunderlich <sw@simonwunderlich.de> <siwu@hrz.tu-chemnitz.de>
 Sricharan Ramabadhran <quic_srichara@quicinc.com> <sricharan@codeaurora.org>
 Srinivas Ramana <quic_sramana@quicinc.com> <sramana@codeaurora.org>
 Sriram R <quic_srirrama@quicinc.com> <srirrama@codeaurora.org>