extmod: Make extmod modules use MP_REGISTER_MODULE.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

extmod/modframebuf.c

@@ -667,6 +667,8 @@ const mp_obj_module_t mp_module_framebuf = {
     .base = { &mp_type_module },
     .globals = (mp_obj_dict_t *)&framebuf_module_globals,
 };
+
+MP_REGISTER_MODULE(MP_QSTR_framebuf, mp_module_framebuf, MICROPY_PY_FRAMEBUF);
 #endif
 
 #endif // MICROPY_PY_FRAMEBUF