Add missing uhashlib back in #178

Author: nickzoic

ports/esp32/mpconfigport.h

@@ -176,6 +176,7 @@ extern const struct _mp_obj_module_t mp_module_onewire;
     { MP_OBJ_NEW_QSTR(MP_QSTR_machine), (mp_obj_t)&mp_module_machine }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_network), (mp_obj_t)&mp_module_network }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR__onewire), (mp_obj_t)&mp_module_onewire }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_uhashlib), (mp_obj_t)&mp_module_uhashlib }, \
 
 #define MICROPY_PORT_BUILTIN_MODULE_WEAK_LINKS \
     { MP_OBJ_NEW_QSTR(MP_QSTR_binascii), (mp_obj_t)&mp_module_ubinascii }, \