add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally computed:
sha256  aea6dd337da8781847c75b3b5b876e4de9c58520e0d77310679a979fc6402fa7  ngrep-1.45.tar.bz2