add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/tools/testing/radix-tree/.gitignore
..
..
@@ -1,6 +1,8 @@
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+# SPDX-License-Identifier: GPL-2.0-only
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 generated/map-shift.h
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 idr.c
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 idr-test
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 main
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 multiorder
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 radix-tree.c
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+xarray