add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally computed:
sha256    267ad61d09d97069acec5d4878dceda20d0ddbebd27557d80230847848cee6c2    ptpd2-ptpd-2.3.1.tar.gz