add gpio

hc

2023-12-04 f33f61bdb7ca6d5ebe7a78f9d8694b91360279ac

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# Locally calculated after checking pgp signature
sha256    767112a204407e62dbc3106647cf839ed544f3cf5d0f0523aaa2508623aad63e    gperf-3.0.4.tar.gz
sha256 8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903  COPYING