Move M201 to cpp

Marlin/src/Marlin.cpp

   return false;
 }
 
-#include "gcode/config/M201.h"
-
 #if 0 // Not used for Sprinter/grbl gen6
   #include "gcode/config/M202.h"
 #endif

Marlin/src/gcode/config/M201.h → Marlin/src/gcode/config/M201.cpp

  *
  */
 
+#include "../gcode.h"
+#include "../../module/planner.h"
+
 /**
  * M201: Set max acceleration in units/s^2 for print moves (M201 X1000 Y1000)
  *
  *       With multiple extruders use T to specify which one.
  */
-void gcode_M201() {
+void GcodeSuite::M201() {
 
   GET_TARGET_EXTRUDER();
 

Marlin/src/gcode/gcode.cpp

 extern void gcode_M163();
 extern void gcode_M164();
 extern void gcode_M165();
-extern void gcode_M201();
 extern void gcode_M203();
 extern void gcode_M204();
 extern void gcode_M205();
       case 200: // M200: Set filament diameter, E to cubic units
         M200();
         break;
-      case 201: // M201: Set max acceleration for print moves (units/s^2)
-        gcode_M201();
-        break;
+
+      case 201: M201(); break;  // M201: Set max acceleration for print moves (units/s^2)
+
       #if 0 // Not used for Sprinter/grbl gen6
         case 202: // M202
           gcode_M202();