add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally computed:
sha256  90e12c71732474cac4d055bf9d104e599178b4e1ecb6d3b8c556eaa11f8f6447  nscd-0.54.c