Fixed bug in prev/curr layer tracker

llvm/projects/soc_simulator/src/driver.py

@@ -264,6 +264,7 @@ class Driver:
 
                     self.__aggregate_results[Driver.results_time_key][self.__config_count] += total_time
                     self.__aggregate_results[Driver.results_energy_key][self.__config_count] += total_energy 
+                prev_layer = curr_layer
 
             self.__config_count += 1
             print("\n")