add gpio

hc

2023-12-04 f33f61bdb7ca6d5ebe7a78f9d8694b91360279ac

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# From: https://www.kernel.org/pub/software/scm/git/sha256sums.asc
sha256 cfad4337f2fdbfc1e2c8abce5e17e1dd4e1718a34ac2cbe3238fbe2426f2ea19  git-2.16.1.tar.xz
sha256 5b2198d1645f767585e8a88ac0499b04472164c0d2da22e75ecf97ef443ab32e  COPYING
sha256 1922f45d2c49e390032c9c0ba6d7cac904087f7cec51af30c2b2ad022ce0e76a  LGPL-2.1