MAINTAINERS: Add a maintainer for OCP Time Card

I've been contributing and reviewing patches for ptp_ocp driver for
some time and I'm taking care of it's github mirror. On Jakub's
suggestion, I would like to step forward and become a maintainer for
this driver. This patch adds a dedicated entry to MAINTAINERS.

Signed-off-by: Vadim Fedorenko <[email protected]>
Acked-by: Jonathan Lemon <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: vvfedorenko

MAINTAINERS

@@ -14868,6 +14868,7 @@ F:	include/dt-bindings/
 
 OPENCOMPUTE PTP CLOCK DRIVER
 M:	Jonathan Lemon <[email protected]>
+M:	Vadim Fedorenko <[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	drivers/ptp/ptp_ocp.c