Move M92 to cpp

Marlin/src/Marlin.cpp

   return false;
 }
 
-#include "gcode/config/M92.h"
-
 #if ENABLED(M100_FREE_MEMORY_WATCHER)
   #include "gcode/calibrate/M100.h"
 #endif

Marlin/src/gcode/config/M92.h → Marlin/src/gcode/config/M92.cpp

  *
  */
 
+#include "../gcode.h"
+#include "../../module/planner.h"
+
 /**
  * M92: Set axis steps-per-unit for one or more axes, X, Y, Z, and E.
  *      (Follows the same syntax as G92)
  *
  *      With multiple extruders use T to specify which one.
  */
-void gcode_M92() {
+void GcodeSuite::M92() {
 
   GET_TARGET_EXTRUDER();
 

Marlin/src/gcode/gcode.cpp

 //
 // Placeholders for non-migrated codes
 //
-extern void gcode_M92();
 extern void gcode_M100();
 extern void gcode_M114();
 extern void gcode_M115();
       case 84: M18_M84(); break;  // M84: Disable all steppers or set timeout
       case 85: M85(); break;      // M85: Set inactivity stepper shutdown timeout
 
-      case 92: // M92: Set the steps-per-unit for one or more axes
-        gcode_M92();
-        break;
+      case 92: M92(); break;      // M92: Set the steps-per-unit for one or more axes
+
       case 114: // M114: Report current position
         gcode_M114();
         break;