unix/mpconfigport_dev.h: Enable MICROPY_MODULE_BOOT.
#define MICROPY_READER_VFS (1)
#define MICROPY_WARNINGS_CATEGORY (1)
#define MICROPY_WARNINGS_LOC (1)
+#define MICROPY_MODULE_BOOT (1)
#define MICROPY_MODULE_GETATTR (1)
#define MICROPY_PY_CLASS_BASES (1)
#define MICROPY_PY_DELATTR_SETATTR (1)
