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>

Author: jarkkojs

.mailmap

@@ -312,6 +312,7 @@ Jan Glauber <jan.glauber@gmail.com> <jglauber@cavium.com>
 Jan Kuliga <jtkuliga.kdev@gmail.com> <jankul@alatek.krakow.pl>
 Jarkko Sakkinen <jarkko@kernel.org> <jarkko.sakkinen@linux.intel.com>
 Jarkko Sakkinen <jarkko@kernel.org> <jarkko@profian.com>
+Jarkko Sakkinen <jarkko@kernel.org> <jarkko.sakkinen@opinsys.com>
 Jason Gunthorpe <jgg@ziepe.ca> <jgg@mellanox.com>
 Jason Gunthorpe <jgg@ziepe.ca> <jgg@nvidia.com>
 Jason Gunthorpe <jgg@ziepe.ca> <jgunthorpe@obsidianresearch.com>