extmod/btstack: Use MP_REGISTER_ROOT_POINTER().

This uses MP_REGISTER_ROOT_POINTER() to register
bluetooth_btstack_root_pointers and removes the same from all
mpconfigport.h.

Signed-off-by: David Lechner <david@pybricks.com>

extmod/btstack/modbluetooth_btstack.c

@@ -1460,4 +1460,6 @@ int mp_bluetooth_l2cap_recvinto(uint16_t conn_handle, uint16_t cid, uint8_t *buf
 
 #endif // MICROPY_PY_BLUETOOTH_ENABLE_L2CAP_CHANNELS
 
+MP_REGISTER_ROOT_POINTER(struct _mp_bluetooth_btstack_root_pointers_t *bluetooth_btstack_root_pointers);
+
 #endif // MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_BTSTACK

ports/stm32/mpconfigport.h

@@ -246,13 +246,6 @@ struct _mp_bluetooth_nimble_malloc_t;
 #define MICROPY_PORT_ROOT_POINTER_BLUETOOTH_NIMBLE
 #endif
 
-#if MICROPY_BLUETOOTH_BTSTACK
-struct _mp_bluetooth_btstack_root_pointers_t;
-#define MICROPY_PORT_ROOT_POINTER_BLUETOOTH_BTSTACK struct _mp_bluetooth_btstack_root_pointers_t *bluetooth_btstack_root_pointers;
-#else
-#define MICROPY_PORT_ROOT_POINTER_BLUETOOTH_BTSTACK
-#endif
-
 #ifndef MICROPY_BOARD_ROOT_POINTERS
 #define MICROPY_BOARD_ROOT_POINTERS
 #endif
@@ -292,7 +285,6 @@ struct _mp_bluetooth_btstack_root_pointers_t;
     \
     /* root pointers for sub-systems */ \
     MICROPY_PORT_ROOT_POINTER_BLUETOOTH_NIMBLE \
-    MICROPY_PORT_ROOT_POINTER_BLUETOOTH_BTSTACK \
     \
     /* root pointers defined by a board */ \
         MICROPY_BOARD_ROOT_POINTERS \

ports/unix/mpconfigport.h

@@ -291,10 +291,6 @@ static inline unsigned long mp_urandom_seed_init(void) {
 #define MP_STATE_PORT MP_STATE_VM
 
 #if MICROPY_PY_BLUETOOTH
-#if MICROPY_BLUETOOTH_BTSTACK
-struct _mp_bluetooth_btstack_root_pointers_t;
-#define MICROPY_BLUETOOTH_ROOT_POINTERS struct _mp_bluetooth_btstack_root_pointers_t *bluetooth_btstack_root_pointers;
-#endif
 #if MICROPY_BLUETOOTH_NIMBLE
 struct _mp_bluetooth_nimble_root_pointers_t;
 struct _mp_bluetooth_nimble_malloc_t;