add gpio

hc

2023-12-04 f33f61bdb7ca6d5ebe7a78f9d8694b91360279ac

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# From http://fukuchi.org/works/qrencode/qrencode-3.4.2.tar.gz.sha1
sha1    7daaad61f333ff6cdabfb0d925c3ab668d16dee2    qrencode-3.4.2.tar.gz