add gpio

hc

2023-12-04 f33f61bdb7ca6d5ebe7a78f9d8694b91360279ac

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# Locally computed:
sha256 d3be5c6eec24950cb3bd67dbfbcdf036f1278fae5fd78655ef8cdf9e911e428a dmalloc-5.5.2.tgz