add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/arch/mips/sibyte/common/Makefile
..
..
@@ -1,3 +1,4 @@
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+# SPDX-License-Identifier: GPL-2.0-only
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 obj-y := cfe.o
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 obj-$(CONFIG_SWIOTLB)			+= dma.o
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 obj-$(CONFIG_SIBYTE_BUS_WATCHER)	+= bus_watcher.o