Make safety controller use config overrides from backup ram

stm-firmware/include/reflow-controller/safety/safety-memory.h

@@ -23,6 +23,7 @@
 
 #include <stdint.h>
 #include <stddef.h>
+#include <stdbool.h>
 
 /** @addtogroup safety-memory
  * @{
@@ -143,7 +144,7 @@ struct config_override {
 		} weight_override;
 		struct {
 			uint8_t flag;
-			uint8_t persistance;
+			bool persistance;
 		} persistance_override;
 	} entry;
 };