Spindle/Laser pins for RADDS (#16119)

Marlin/src/pins/sam/pins_RADDS.h

 //
 // Servos
 //
-#define SERVO0_PIN          5
+#if !HAS_CUTTER
+  #define SERVO0_PIN        5
+#endif
 #define SERVO1_PIN          6
 #define SERVO2_PIN         39
 #define SERVO3_PIN         40
 #define HEATER_0_PIN       13
 #define HEATER_1_PIN       12
 #define HEATER_2_PIN       11
-#define HEATER_BED_PIN      7   // BED
+#if !HAS_CUTTER
+  #define HEATER_BED_PIN    7   // BED
+#endif
 
 #ifndef FAN_PIN
   #define FAN_PIN           9
 #define E2END 0x1FFF // 8KB
 
 //
+// M3/M4/M5 - Spindle/Laser Control
+//
+#if HAS_CUTTER
+  #if !NUM_SERVOS
+    #define SPINDLE_LASER_PWM_PIN  5   // SERVO0_PIN
+  #endif
+  #define SPINDLE_LASER_ENA_PIN    7   // HEATER_BED_PIN - Pullup/down!
+#endif
+
+//
 // LCD / Controller
 //
 #if HAS_SPI_LCD