Change auto_memory to be layer_offloading and allow you to set the amount to unload

jobs/process/BaseSDTrainProcess.py

@@ -1759,7 +1759,7 @@ class BaseSDTrainProcess(BaseTrainProcess):
                 )
 
                 # we cannot merge in if quantized
-                if self.model_config.quantize or self.model_config.auto_memory:
+                if self.model_config.quantize or self.model_config.layer_offloading:
                     # todo find a way around this
                     self.network.can_merge_in = False