Filter out duplicate generated code for the same dts files
Signed-off-by: Felix Fietkau <nbd@nbd.name>
ifndef IB
define Device/Build/dtb
ifndef IB
define Device/Build/dtb
+ ifndef BUILD_DTS_$(1)
+ BUILD_DTS_$(1) := 1
$(KDIR)/image-$(1).dtb: FORCE
$(call Image/BuildDTB,$(strip $(2))/$(1).dts,$$@)
image_prepare: $(KDIR)/image-$(1).dtb
$(KDIR)/image-$(1).dtb: FORCE
$(call Image/BuildDTB,$(strip $(2))/$(1).dts,$$@)
image_prepare: $(KDIR)/image-$(1).dtb