mailmap: add Jarkko's employer email address

Add the current employer email address to mailmap.

Link: https://lkml.kernel.org/r/20250523121105.15850-1-jarkko@kernel.org


Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Cc: Antonio Quartulli <antonio@openvpn.net>
Cc: Carlos Bilbao <carlos.bilbao@kernel.org>
Cc: Kees Cook <kees@kernel.org>
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>