Fix up Megatronics 3.2 test

Marlin/src/pins/mega/pins_MEGATRONICS_3.h

@@ -48,12 +48,12 @@
 //
 // Limit Switches
 //
-#define X_MIN_PIN          37
+#define X_MIN_PIN          37   // No INT
-#define X_MAX_PIN          40
+#define X_MAX_PIN          40   // No INT
-#define Y_MIN_PIN          41
+#define Y_MIN_PIN          41   // No INT
-#define Y_MAX_PIN          38
+#define Y_MAX_PIN          38   // No INT
-#define Z_MIN_PIN          18
+#define Z_MIN_PIN          18   // No INT
-#define Z_MAX_PIN          19
+#define Z_MAX_PIN          19   // No INT
 
 //
 // Z Probe (when not Z_MIN_PIN)

buildroot/share/tests/megaatmega2560-tests

@@ -173,8 +173,8 @@ opt_set SERVO_DELAY "{ 300, 300, 300 }"
 opt_enable COREYX USE_XMAX_PLUG MIXING_EXTRUDER GRADIENT_MIX \
            BABYSTEPPING BABYSTEP_DISPLAY_TOTAL FILAMENT_LCD_DISPLAY \
            REPRAP_DISCOUNT_SMART_CONTROLLER MENU_ADDAUTOSTART SDSUPPORT SDCARD_SORT_ALPHA \
-           ENDSTOP_INTERRUPTS_FEATURE ENDSTOP_NOISE_THRESHOLD FAN_SOFT_PWM \
+           ENDSTOP_NOISE_THRESHOLD FAN_SOFT_PWM \
-           AUTO_BED_LEVELING_LINEAR DEBUG_LEVELING_FEATURE FILAMENT_WIDTH_SENSOR \
+           FIX_MOUNTED_PROBE AUTO_BED_LEVELING_LINEAR DEBUG_LEVELING_FEATURE FILAMENT_WIDTH_SENSOR \
            SHOW_TEMP_ADC_VALUES HOME_Y_BEFORE_X EMERGENCY_PARSER \
            SD_ABORT_ON_ENDSTOP_HIT HOST_ACTION_COMMANDS HOST_PROMPT_SUPPORT ADVANCED_OK M114_DETAIL \
            VOLUMETRIC_DEFAULT_ON NO_WORKSPACE_OFFSETS ACTION_ON_KILL EXTRA_FAN_SPEED FWRETRACT