add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/tools/testing/selftests/.gitignore
..
..
@@ -1,5 +1,10 @@
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-kselftest
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+# SPDX-License-Identifier: GPL-2.0-only
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2
 gpiogpio-event-mon
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3
 gpiogpio-hammer
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 gpioinclude/
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5
 gpiolsgpio
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+tpm2/SpaceTest.log
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+
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+# Python bytecode and cache
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+__pycache__/
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+*.py[cod]