[MAINTAINERS] Update my email address

[Kyrylo Tkachov]

Hi all,

Pushing to trunk.
Thanks,
Kyrill

Signed-off-by: Kyrylo Tkachov <ktkac...@nvidia.com>

            * MAINTAINERS (aarch64 port): Update my email address.
            (DCO section): Likewise.

maintainers.patch
Description: maintainers.patch