mailmap: add entries for Alexander Lobakin

My D-Link and Yandex addresses don't exist anymore, map them to my
private box.

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Link: https://lore.kernel.org/r/5YUtoWlS7NX1N6TxI4ddZ9V-Yx8Bn8wzrEVJqfkTuwEzZjAsJg157goV81xPAU76k84Nis2uBwdHWk4JmYHbvGmd_JcBTk-rZDVpFNPNolU=@pm.me


Signed-off-by: Jonathan Corbet <corbet@lwn.net>