mailmap: Yan, Zheng name normalization

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Somnath Roy is with SanDisk

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Moritz Möller is with IQW

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Eric Mourgaya is with Credit Mutuel Arkea

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Dmitry Smirnov is with the Free Software Foundation

Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Derek Yarnell is with University of Mississippi

Signed-off-by: Loic Dachary <loic@dachary.org>