mailmap: add entry for <alobakin@marvell.com>

My Marvell account has been suspended, map the address to my private mail.

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Link: https://lore.kernel.org/r/9xzFiqHAFGYuKfUycRaCQSIgsqmeL9E9SA3lSoqOMUPhFVaAgSgvukCUWO7iRbjtiUrFjK46fhu7dJ5TaCv1EjaNFm5yF_H3y5S1s_QALCA=@pm.me


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