mlxsw: resources: Add resource identifier for RIF MAC profiles

Add a resource identifier for maximum RIF MAC profiles so that it could
be later used to query the information from firmware.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>