add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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config BR2_PACKAGE_WHICH
    bool "which"
    depends on BR2_PACKAGE_BUSYBOX_SHOW_OTHERS
    help
      The standard 'which' utility.
 
      http://carlowood.github.io/which/index.html