add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/arch/powerpc/sysdev/xive/Makefile
..
..
@@ -1,4 +1,4 @@
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-subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
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+# SPDX-License-Identifier: GPL-2.0-only
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2
 
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 obj-y				+= common.o
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 obj-$(CONFIG_PPC_XIVE_NATIVE)	+= native.o