mailmap: update Matti Vaittinen's email address

The email backend used by ROHM keeps labeling patches as spam.  This can
result in missing the patches.

Switch my mail address from a company mail to a personal one.

Link: https://lkml.kernel.org/r/8f4498b66fedcbded37b3b87e0c516e659f8f583.1669912977.git.mazziesaccount@gmail.com
Signed-off-by: Matti Vaittinen <[email protected]>
Suggested-by: Krzysztof Kozlowski <[email protected]>
Cc: Anup Patel <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Atish Patra <[email protected]>
Cc: Baolin Wang <[email protected]>
Cc: Ben Widawsky <[email protected]>
Cc: Bjorn Andersson <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Kirill Tkhai <[email protected]>
Cc: Qais Yousef <[email protected]>
Cc: Vasily Averin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: M-Vaittinen

.mailmap

@@ -287,6 +287,7 @@ Matthew Wilcox <[email protected]> <[email protected]>
 Matthew Wilcox <[email protected]> <[email protected]>
 Matthias Fuchs <[email protected]> <[email protected]>
 Matthieu CASTET <[email protected]>
+Matti Vaittinen <[email protected]> <[email protected]>
 Matt Ranostay <[email protected]> <[email protected]>
 Matt Ranostay <[email protected]> Matthew Ranostay <[email protected]>
 Matt Ranostay <[email protected]> <[email protected]>