add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/tools/testing/selftests/powerpc/pmu/ebb/lost_exception_test.c
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@@ -1,6 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright 2014, Michael Ellerman, IBM Corp.
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- * Licensed under GPLv2.
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  */
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 #include <sched.h>