Fix unimplemented member function in control scheduler, now test_12 of testsuite passes

miosix/kernel/scheduler/control/control_scheduler_types.h

@@ -117,7 +117,7 @@ public:
      * @return 
      */
     inline bool mutexLessOp(ControlSchedulerPriority b){
-        return false;
+        return priority < b.priority;
     }
 
 private: