dpaa2-mac: add the MC API for reconfiguring the protocol

The MC firmware gained recently a new command which can reconfigure the
running protocol on the underlying MAC. Add this new command which will
be used in the next patches in order to do a major reconfig on the
interface.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>