MAINTAINERS: Marvell adresses might need update

Hi

While replying to patch review request for 3.16.81-rc1 in
https://lore.kernel.org/lkml/20200109121117.GB1270@lorien.valinor.li/ (local)
including Ganapathi Bhat, I got a notification that NXP has acquired
Marvell’s Wireless business unit and Ganapathi can be reached under
ganapathi.bhat@nxp.com .

This probably means that at least the entry for Ganapathi Bhat in the
MAINTAINERS file needs an update and the .mailcap file.

This is as well the address as used in
https://lore.kernel.org/lkml/DB7PR04MB5242BEB1F917B1FDB21DF3DF8F3F0@DB7PR04MB5242.eurprd04.prod.outlook.com/ (local)
.

Regards,
Salvatore