bricks/stm32: Enable ustruct.
This is useful for packing and unpacking binary data.
This is primarily useful when hub-to-hub communication is added in future releases.
#define MICROPY_PY_ALL_SPECIAL_METHODS (PYBRICKS_STM32_OPT_EXTRA_MOD)
#define MICROPY_PY_REVERSE_SPECIAL_METHODS (PYBRICKS_STM32_OPT_EXTRA_MOD)
#define MICROPY_PY_IO (PYBRICKS_STM32_OPT_EXTRA_MOD)
-#define MICROPY_PY_STRUCT (0)
+#define MICROPY_PY_STRUCT (PYBRICKS_STM32_OPT_EXTRA_MOD)
#define MICROPY_PY_SYS (PYBRICKS_STM32_OPT_EXTRA_MOD)
#define MICROPY_PY_SYS_EXIT (0)
#define MICROPY_PY_SYS_MODULES (0)
