add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/Documentation/driver-api/soundwire/index.rst
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..
@@ -10,7 +10,7 @@
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    error_handling
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    locking
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-.. only::  subproject
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+.. only::  subproject and html
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    Indices
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    =======