Move M220 to cpp

Marlin/src/Marlin.cpp

   return false;
 }
 
-#include "gcode/config/M220.h"
-
 #include "gcode/control/M226.h"
 
 #if ENABLED(EXPERIMENTAL_I2CBUS)

Marlin/src/gcode/config/M220.h → Marlin/src/gcode/config/M220.cpp

  *
  */
 
+#include "../gcode.h"
+#include "../../module/motion.h"
+
 /**
  * M220: Set speed percentage factor, aka "Feed Rate" (M220 S95)
  */
-void gcode_M220() {
-  if (parser.seenval('S')) feedrate_percentage = parser.value_int();
+void GcodeSuite::M220() {
+
+  if (parser.seenval('S'))
+    feedrate_percentage = parser.value_int();
+
 }

Marlin/src/gcode/gcode.cpp

 extern void gcode_M163();
 extern void gcode_M164();
 extern void gcode_M165();
-extern void gcode_M220();
 extern void gcode_M226();
 extern void gcode_M240();
 extern void gcode_M250();
           break;
       #endif
 
-      case 220: // M220: Set Feedrate Percentage: S<percent> ("FR" on your LCD)
-        gcode_M220();
-        break;
+      case 220: M220(); break;    // M220: Set Feedrate Percentage: S<percent> ("FR" on your LCD)
 
       case 221: // M221: Set Flow Percentage
         M221();