Add HAS_EXTRA_ENDSTOPS macro

Marlin/src/config/examples/delta/Geeetech/Rostock 301/Configuration.h

 #define X_MAX_ENDSTOP_INVERTING false  // set to true to invert the logic of the endstop.
 #define Y_MAX_ENDSTOP_INVERTING false  // set to true to invert the logic of the endstop.
 #define Z_MAX_ENDSTOP_INVERTING false  // set to true to invert the logic of the endstop.
-#define Z_MIN_PROBE_ENDSTOP_INVERTING false  // set to true to invert the logic of the probe.
+#define Z_MIN_PROBE_ENDSTOP_INVERTING false // set to true to invert the logic of the probe.
 
 /**
  * Stepper Drivers

Marlin/src/gcode/calibrate/M666.cpp

 
 #include "../../inc/MarlinConfig.h"
 
-#if ENABLED(DELTA) || ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS
+#if ENABLED(DELTA) || HAS_EXTRA_ENDSTOPS
 
 #include "../gcode.h"
 
     #endif
   }
 
-#elif ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS
+#elif HAS_EXTRA_ENDSTOPS
 
   #include "../../module/endstops.h"
 
     }
   }
 
-#endif // X_DUAL_ENDSTOPS || Y_DUAL_ENDSTOPS || Z_DUAL_ENDSTOPS
+#endif // HAS_EXTRA_ENDSTOPS
 
-#endif // DELTA || X_DUAL_ENDSTOPS || Y_DUAL_ENDSTOPS || Z_DUAL_ENDSTOPS
+#endif // DELTA || HAS_EXTRA_ENDSTOPS

Marlin/src/gcode/gcode.h

     static void M665();
   #endif
 
-  #if ENABLED(DELTA) || ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS
+  #if ENABLED(DELTA) || HAS_EXTRA_ENDSTOPS
     static void M666();
   #endif
 

Marlin/src/gcode/queue.cpp

           gcode_LastN = gcode_N;
         }
         #if ENABLED(SDSUPPORT)
-          // Pronterface "M29" and "M29 " has no line number 
+          // Pronterface "M29" and "M29 " has no line number
           else if (card.flag.saving && !is_M29(command))
             return gcode_line_error(PSTR(MSG_ERR_NO_CHECKSUM), i);
         #endif

Marlin/src/inc/Conditionals_LCD.h

 
 #define Z_MULTI_STEPPER_DRIVERS (ENABLED(Z_DUAL_STEPPER_DRIVERS) || ENABLED(Z_TRIPLE_STEPPER_DRIVERS))
 #define Z_MULTI_ENDSTOPS (ENABLED(Z_DUAL_ENDSTOPS) || ENABLED(Z_TRIPLE_ENDSTOPS))
+#define HAS_EXTRA_ENDSTOPS (ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS)
 
 #define IS_SCARA     (ENABLED(MORGAN_SCARA) || ENABLED(MAKERARM_SCARA))
 #define IS_KINEMATIC (ENABLED(DELTA) || IS_SCARA)

Marlin/src/module/endstops.h

 
   public:
 
-    #if ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS
+    #if HAS_EXTRA_ENDSTOPS
       typedef uint16_t esbits_t;
       #if ENABLED(X_DUAL_ENDSTOPS)
         static float x2_endstop_adj;

Marlin/src/module/motion.cpp

   #endif
 
   // Set flags for X, Y, Z motor locking
-  #if ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS
+  #if HAS_EXTRA_ENDSTOPS
     switch (axis) {
       #if ENABLED(X_DUAL_ENDSTOPS)
         case X_AXIS:
     #endif
   }
 
-  #if ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS
+  #if HAS_EXTRA_ENDSTOPS
     const bool pos_dir = axis_home_dir > 0;
     #if ENABLED(X_DUAL_ENDSTOPS)
       if (axis == X_AXIS) {

Marlin/src/module/stepper.cpp

 
 // public:
 
-#if ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS || ENABLED(Z_STEPPER_AUTO_ALIGN)
+#if HAS_EXTRA_ENDSTOPS || ENABLED(Z_STEPPER_AUTO_ALIGN)
   bool Stepper::separate_multi_axis = false;
 #endif
 

Marlin/src/module/stepper.h

 
   public:
 
-    #if ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS || ENABLED(Z_STEPPER_AUTO_ALIGN)
+    #if HAS_EXTRA_ENDSTOPS || ENABLED(Z_STEPPER_AUTO_ALIGN)
       static bool separate_multi_axis;
     #endif
 
       static void microstep_readings();
     #endif
 
-    #if ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS || ENABLED(Z_STEPPER_AUTO_ALIGN)
+    #if HAS_EXTRA_ENDSTOPS || ENABLED(Z_STEPPER_AUTO_ALIGN)
       FORCE_INLINE static void set_separate_multi_axis(const bool state) { separate_multi_axis = state; }
     #endif
     #if ENABLED(X_DUAL_ENDSTOPS)