add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/fs/nfs_common/grace.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Common code for control of lockd and nfsv4 grace periods.
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  *