AC_AutoTune: print gains on axis completion

libraries/AC_AutoTune/AC_AutoTune.cpp

@@ -454,6 +454,8 @@ void AC_AutoTune::control_attitude()
                 // we've reached the end of a D-up-down PI-up-down tune type cycle
                 next_tune_type(tune_type, true);
 
+                report_final_gains(axis);
+
                 // advance to the next axis
                 bool complete = false;
                 switch (axis) {

libraries/AC_AutoTune/AC_AutoTune.h

@@ -174,6 +174,9 @@ protected:
     // return current axis string
     const char *axis_string() const;
 
+    // report final gains for a given axis to GCS
+    virtual void report_final_gains(AxisType test_axis) const = 0;
+
     // Functions added for heli autotune
 
     // Add additional updating gain functions specific to heli