Minor babystep cleanup patches

Marlin/stepper.cpp

 
   // MUST ONLY BE CALLED BY AN ISR,
   // No other ISR should ever interrupt this!
-  void Stepper::babystep(const uint8_t axis, const bool direction) {
+  void Stepper::babystep(const AxisEnum axis, const bool direction) {
 
     switch (axis) {
 

Marlin/stepper.h

     #endif
 
     #if ENABLED(BABYSTEPPING)
-      static void babystep(const uint8_t axis, const bool direction); // perform a short step with a single stepper motor, outside of any convention
+      static void babystep(const AxisEnum axis, const bool direction); // perform a short step with a single stepper motor, outside of any convention
     #endif
 
     static inline void kill_current_block() {

Marlin/temperature.cpp

   } // temp_count >= OVERSAMPLENR
 
   #if ENABLED(BABYSTEPPING)
-    for (uint8_t axis = X_AXIS; axis <= Z_AXIS; axis++) {
+    LOOP_XYZ(axis) {
       int curTodo = babystepsTodo[axis]; //get rid of volatile for performance
 
       if (curTodo > 0) {
-        stepper.babystep(axis,/*fwd*/true);
+        stepper.babystep((AxisEnum)axis,/*fwd*/true);
         babystepsTodo[axis]--; //fewer to do next time
       }
       else if (curTodo < 0) {
-        stepper.babystep(axis,/*fwd*/false);
+        stepper.babystep((AxisEnum)axis,/*fwd*/false);
         babystepsTodo[axis]++; //fewer to do next time
       }
     }

Marlin/temperature.h

 
     #if ENABLED(BABYSTEPPING)
 
-      static void babystep_axis(AxisEnum axis, int distance) {
+      static void babystep_axis(const AxisEnum axis, const int distance) {
         #if ENABLED(COREXY) || ENABLED(COREXZ) || ENABLED(COREYZ)
           #if ENABLED(BABYSTEP_XY)
             switch (axis) {

Marlin/ultralcd.cpp

       if (lcd_clicked) { defer_return_to_status = false; return lcd_goto_previous_menu(); }
       ENCODER_DIRECTION_NORMAL();
       if (encoderPosition) {
-        int babystep_increment = (int32_t)encoderPosition * BABYSTEP_MULTIPLICATOR;
+        int babystep_increment = (int32_t)encoderPosition * (BABYSTEP_MULTIPLICATOR);
         encoderPosition = 0;
         lcdDrawUpdate = LCDVIEW_REDRAW_NOW;
         thermalManager.babystep_axis(axis, babystep_increment);