klippy: Introduce load_config_prefix() for modules that take parameters

Use both load_config() and load_config_prefix() functions when
dynamically loading a module from the extras directory - if the config
section name has parameters in it then use load_config_prefix().

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/extras/probe.py

@@ -172,6 +172,4 @@ def coordinate_descent(adj_params, params, error_func):
     return params
 
 def load_config(config):
-    if config.get_name() != 'probe':
-        raise config.error("Invalid probe config name")
     return PrinterProbe(config)