net: sparx5: ops out chip port to device index/bit functions

net: sparx5: ops out chip port to device index/bit functions

The chip port device index and mode bit can be obtained using the port
number.  However the mapping of port number to chip device index and
mode bit differs on Sparx5 and lan969x. Therefore ops out the function.

Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>