add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/dca/Makefile
..
..
@@ -1,2 +1,3 @@
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+# SPDX-License-Identifier: GPL-2.0-only
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 obj-$(CONFIG_DCA) += dca.o
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 dca-objs := dca-core.o dca-sysfs.o