--- zzzz-none-000/linux-4.9.218/arch/arm/boot/dts/Makefile	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ax-750/linux-4.9.218/arch/arm/boot/dts/Makefile	2023-03-29 10:59:05.000000000 +0000
@@ -956,9 +956,3 @@
 dtb-$(CONFIG_ARCH_ASPEED) += aspeed-bmc-opp-palmetto.dtb \
 	aspeed-ast2500-evb.dtb
 endif
-
-dtstree		:= $(srctree)/$(src)
-dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
-
-always		:= $(dtb-y)
-clean-files	:= *.dtb