mailmap: add entry for Oleksandr

Map my corporate email to my personal one.

Link: https://lkml.kernel.org/r/20230419134734.454630-1-oleksandr@natalenko.nameSigned-off-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

.mailmap

@@ -354,6 +354,7 @@ Nicolas Pitre <nico@fluxnic.net> <nico@linaro.org>
 Nicolas Saenz Julienne <nsaenz@kernel.org> <nsaenzjulienne@suse.de>
 Nicolas Saenz Julienne <nsaenz@kernel.org> <nsaenzjulienne@suse.com>
 Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
+Oleksandr Natalenko <oleksandr@natalenko.name> <oleksandr@redhat.com>
 Oleksij Rempel <linux@rempel-privat.de> <bug-track@fisher-privat.net>
 Oleksij Rempel <linux@rempel-privat.de> <external.Oleksij.Rempel@de.bosch.com>
 Oleksij Rempel <linux@rempel-privat.de> <fixed-term.Oleksij.Rempel@de.bosch.com>