Fix `sq`/`min`/`max` macros after platform headers

Marlin/src/HAL/HAL_LPC1768/HAL.h

 
 #include <stdint.h>
 #include <stdarg.h>
+
+#undef min
+#undef max
+
 #include <algorithm>
 
 void _printf (const  char *format, ...);
 #define B01 1
 #define B10 2
 
-#include "arduino.h"
+#include "include/arduino.h"
+
 #include "pinmapping.h"
 #include "fastio.h"
 #include "watchdog.h"

Marlin/src/HAL/HAL_TEENSY35_36/HAL_Teensy.h

 
 #include <Arduino.h>
 
+// Redefine sq macro defined by teensy3/wiring.h
+#undef sq
+#define sq(x) ((x)*(x))
+
 #include "fastio_Teensy.h"
 #include "watchdog_Teensy.h"