staging: fsl-dpaa2/ethsw: Update maintainers for Ethernet Switch driver

Removing myself as the maintainer for this driver and adding Ioana R.
and Ioana C.

Signed-off-by: Razvan Stefanescu <razvan.stefanescu@nxp.com>
Acked-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Acked-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>