maintainers: update for rawdev
maintainers: update for rawdev

Replace rawdev maintainer. Shreyansh is no longer with NXP.

Signed-off-by: Hemant Agrawal <90d96ef1ecd8ed49b97c7897be950e80824a9c5c@nxp.com>
Acked-by: Nipun Gupta <4871fd67344c57328097f2fd932ad9a0f1f1fe74@nxp.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk