move neopixel_in_use flag to shared-bindings

Author: hierophect

ports/atmel-samd/common-hal/microcontroller/Pin.h

@@ -31,9 +31,6 @@
 
 #include "peripherals/samd/pins.h"
 
-#ifdef MICROPY_HW_NEOPIXEL
-extern bool neopixel_in_use;
-#endif
 #ifdef MICROPY_HW_APA102_MOSI
 extern bool apa102_sck_in_use;
 extern bool apa102_mosi_in_use;

ports/nrf/common-hal/microcontroller/Pin.h

@@ -31,9 +31,6 @@
 
 #include "peripherals/nrf/pins.h"
 
-#ifdef MICROPY_HW_NEOPIXEL
-extern bool neopixel_in_use;
-#endif
 #ifdef MICROPY_HW_APA102_MOSI
 extern bool apa102_sck_in_use;
 extern bool apa102_mosi_in_use;

shared-bindings/microcontroller/Pin.h

@@ -30,6 +30,10 @@
 #include "common-hal/microcontroller/Pin.h"
 #include "py/obj.h"
 
+#ifdef MICROPY_HW_NEOPIXEL
+extern bool neopixel_in_use;
+#endif
+
 // Type object used in Python. Should be shared between ports.
 extern const mp_obj_type_t mcu_pin_type;