esp32/network_lan: Make power arg to constructor optional.
A value of None for this argument is already supported, so the argument can
be made optional.
@@ -99,7 +99,7 @@ STATIC mp_obj_t get_lan(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_ar
{ MP_QSTR_id, MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_mdc, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_OBJ },
{ MP_QSTR_mdio, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_OBJ },
- { MP_QSTR_power, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_OBJ },
+ { MP_QSTR_power, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_phy_addr, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_INT },
{ MP_QSTR_phy_type, MP_ARG_KW_ONLY | MP_ARG_REQUIRED | MP_ARG_INT },
{ MP_QSTR_clock_mode, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = -1} },
