MAINTAINERS: fix ptp ocp driver maintainers address

While checking the latest series for ptp_ocp driver I realised that
MAINTAINERS file has wrong item about email on linux.dev domain.

Fixes: 795fd934 ("ptp_ocp: adjust MAINTAINERS and mailmap")
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240904131855.559078-1-vadim.fedorenko@linux.dev


Signed-off-by: Jakub Kicinski <kuba@kernel.org>