add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# From https://www.kernel.org/pub/software/network/tftp/tftp-hpa/sha256sums.asc
sha256    afee361df96a2f88344e191f6a25480fd714e1d28d176c3f10cc43fa206b718b    tftp-hpa-5.2.tar.xz