Make some z probe and servo code tweaks

Marlin/Marlin_main.cpp

 #if NUM_SERVOS > 0
 
   /**
-   * M280: Set servo position absolute. P: servo index, S: angle or microseconds
+   * M280: Get or set servo position. P<index> S<angle>
    */
   inline void gcode_M280() {
-    int servo_index = code_seen('P') ? code_value() : -1;
+    int servo_index = code_seen('P') ? code_value_short() : -1;
     int servo_position = 0;
     if (code_seen('S')) {
-      servo_position = code_value();
-      if ((servo_index >= 0) && (servo_index < NUM_SERVOS)) {
+      servo_position = code_value_short();
+      if (servo_index >= 0 && servo_index < NUM_SERVOS) {
         Servo *srv = &servo[servo_index];
         #if SERVO_LEVELING
           srv->attach(0);
 
 #ifdef MESH_BED_LEVELING
 
-  #if !defined(MIN)
-    #define MIN(_v1, _v2) (((_v1) < (_v2)) ? (_v1) : (_v2))
-  #endif  // ! MIN
-
 // This function is used to split lines on mesh borders so each segment is only part of one mesh area
 void mesh_plan_buffer_line(float x, float y, float z, const float e, float feed_rate, const uint8_t &extruder, uint8_t x_splits=0xff, uint8_t y_splits=0xff)
 {
   int piy = mbl.select_y_index(current_position[Y_AXIS]);
   int ix = mbl.select_x_index(x);
   int iy = mbl.select_y_index(y);
-  pix = MIN(pix, MESH_NUM_X_POINTS-2);
-  piy = MIN(piy, MESH_NUM_Y_POINTS-2);
-  ix = MIN(ix, MESH_NUM_X_POINTS-2);
-  iy = MIN(iy, MESH_NUM_Y_POINTS-2);
+  pix = min(pix, MESH_NUM_X_POINTS - 2);
+  piy = min(piy, MESH_NUM_Y_POINTS - 2);
+  ix = min(ix, MESH_NUM_X_POINTS - 2);
+  iy = min(iy, MESH_NUM_Y_POINTS - 2);
   if (pix == ix && piy == iy) {
     // Start and end on same mesh square
     plan_buffer_line(x, y, z, e, feed_rate, extruder);

Marlin/pins.h

 #endif
 
 #if defined(DISABLE_Z_PROBE_ENDSTOP) || !defined(Z_PROBE_ENDSTOP) // Allow code to compile regardless of Z_PROBE_ENDSTOP setting.
+  #undef Z_PROBE_PIN
   #define Z_PROBE_PIN        -1
 #endif
 

Marlin/pins_OMCA.h

 #define Z_ENABLE_PIN       10
 #define Z_STOP_PIN         2
 
-#define E0_STEP_PIN         24
-#define E0_DIR_PIN          21
-#define E0_ENABLE_PIN       10
+#define E0_STEP_PIN        24
+#define E0_DIR_PIN         21
+#define E0_ENABLE_PIN      10
 
 // future proofing
 #define __FS  20
 #define __GS  18
 #define __GD  13
 
-#define UNUSED_PWM           14 // PWM on LEFT connector
+#define UNUSED_PWM         14 // PWM on LEFT connector
 
-#define E1_STEP_PIN         -1 // 21
-#define E1_DIR_PIN          -1 // 20
-#define E1_ENABLE_PIN       -1 // 19
+#define E1_STEP_PIN        -1 // 21
+#define E1_DIR_PIN         -1 // 20
+#define E1_ENABLE_PIN      -1 // 19
 
-#define E2_STEP_PIN         -1 // 21
-#define E2_DIR_PIN          -1 // 20
-#define E2_ENABLE_PIN       -1 // 18
+#define E2_STEP_PIN        -1 // 21
+#define E2_DIR_PIN         -1 // 20
+#define E2_ENABLE_PIN      -1 // 18
 
 #define SDPOWER            -1
 #define SDSS               11
 #define HEATER_BED_PIN      4
 #define TEMP_BED_PIN        2 // 1,2 or I2C
 
-#define I2C_SCL       16
-#define I2C_SDA       17
+#define I2C_SCL            16
+#define I2C_SDA            17
+