mailmap: update Baolin Wang's email

I recently switched to my Alibaba email address. So add aliases for my
previous email addresses.

Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

.mailmap

@@ -60,6 +60,10 @@ Arnd Bergmann <arnd@arndb.de>
 Atish Patra <atishp@atishpatra.org> <atish.patra@wdc.com>
 Axel Dyks <xl@xlsigned.net>
 Axel Lin <axel.lin@gmail.com>
+Baolin Wang <baolin.wang@linux.alibaba.com> <baolin.wang@linaro.org>
+Baolin Wang <baolin.wang@linux.alibaba.com> <baolin.wang@spreadtrum.com>
+Baolin Wang <baolin.wang@linux.alibaba.com> <baolin.wang@unisoc.com>
+Baolin Wang <baolin.wang@linux.alibaba.com> <baolin.wang7@gmail.com>
 Bart Van Assche <bvanassche@acm.org> <bart.vanassche@sandisk.com>
 Bart Van Assche <bvanassche@acm.org> <bart.vanassche@wdc.com>
 Ben Gardner <bgardner@wabtec.com>