net: devlink: stub port params cmds for they are unused internally

net: devlink: stub port params cmds for they are unused internally

Follow-up the removal of unused internal api of port params made by
commit c62c281f3d6c ("devlink: Delete not used port parameters APIs")
and stub the commands and add extack message to tell the user what is
going on.

If later on port params are needed, could be easily re-introduced,
but until then it is a dead code.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20220826082730.1399735-1-jiri@resnulli.us
Signed-off-by: Paolo Abeni <pabeni@redhat.com>