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: 795fd9342c62 ("ptp_ocp: adjust MAINTAINERS and mailmap")
Signed-off-by: Vadim Fedorenko <[e-mail]>
Reviewed-by: Simon Horman <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

MAINTAINERS

···
 
 OPENCOMPUTE PTP CLOCK DRIVER
 M:	Jonathan Lemon <[e-mail]>
-M:	Vadim Fedorenko <[e-mail]>
+M:	Vadim Fedorenko <[e-mail]>
 L:	[e-mail]
 S:	Maintained
 F:	drivers/ptp/ptp_ocp.c