image: clean up UBI related device variable definitions

Move UBI related variable export to core, since the variables are used
by a core Build/ template

Signed-off-by: Felix Fietkau <nbd@nbd.name>

include/image.mk

@@ -322,15 +322,26 @@ define Device/Init
   KERNEL_DEPENDS :=
   KERNEL_SIZE :=
 
+  UBOOTENV_IN_UBI :=
+  KERNEL_IN_UBI :=
+  BLOCKSIZE :=
+  PAGESIZE :=
+  SUBPAGESIZE :=
+
   FILESYSTEMS := $(TARGET_FILESYSTEMS)
 endef
 
+DEFAULT_DEVICE_VARS := \
+  DEVICE_NAME KERNEL KERNEL_INITRAMFS KERNEL_INITRAMFS_IMAGE \
+  UBOOTENV_IN_UBI KERNEL_IN_UBI \
+  BLOCKSIZE PAGESIZE SUBPAGESIZE
+
 define Device/ExportVar
   $(1) : $(2):=$$($(2))
 
 endef
 define Device/Export
-  $(foreach var,$(DEVICE_VARS) DEVICE_NAME KERNEL KERNEL_INITRAMFS KERNEL_INITRAMFS_IMAGE,$(call Device/ExportVar,$(1),$(var)))
+  $(foreach var,$(DEVICE_VARS) $(DEFAULT_DEVICE_VARS),$(call Device/ExportVar,$(1),$(var)))
   $(1) : FILESYSTEM:=$(2)
 endef
 

target/linux/ipq806x/image/Makefile

@@ -45,7 +45,7 @@ define Device/Default
 	KERNEL_IN_UBI :=
 	BOARD_NAME :=
 endef
-DEVICE_VARS += DEVICE_DTS KERNEL_IN_UBI BOARD_NAME
+DEVICE_VARS += DEVICE_DTS BOARD_NAME KERNEL_SIZE
 
 define Device/LegacyImage
 	KERNEL_SUFFIX := -uImage
@@ -79,7 +79,7 @@ define Device/DniImage
 	IMAGE/factory.img := append-kernel | append-ubi | netgear-dni
 	IMAGE/sysupgrade.tar = sysupgrade-nand
 endef
-DEVICE_VARS += KERNEL_SIZE NETGEAR_BOARD_ID NETGEAR_HW_ID DEVICE_BLOCK_SIZE DEVICE_PAGE_SIZE
+DEVICE_VARS += NETGEAR_BOARD_ID NETGEAR_HW_ID
 
 define Device/TpSafeImage
 	PROFILES += $$(DEVICE_NAME)
@@ -162,10 +162,10 @@ define Device/EA8500
 	IMAGES := factory.bin sysupgrade.tar
 	IMAGE/factory.bin := append-kernel 3145728 | append-ubi
 	IMAGE/sysupgrade.tar := sysupgrade-nand
-	DEVICE_VARS += DEVICE_DTS KERNEL_SIZE PAGESIZE BLOCKSIZE SUBPAGESIZE
 	DEVICE_TITLE := Linksys EA8500
 	DEVICE_PACKAGES := ath10k-firmware-qca99x0
 endef
+DEVICE_VARS += DEVICE_DTS
 
 define Device/R7500
 	$(call Device/DniImage)

target/linux/kirkwood/image/Makefile

@@ -10,7 +10,7 @@ NAND_BLOCKSIZE := 2048-128k
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
-DEVICE_VARS += DEVICE_DTS KERNEL_SIZE PAGESIZE BLOCKSIZE SUBPAGESIZE KERNEL_IN_UBI
+DEVICE_VARS += DEVICE_DTS KERNEL_SIZE
 KERNEL_LOADADDR:=0x8000
 TARGET_DEVICES = linksys-audi linksys-viper dockstar goflexnet goflexhome
 

target/linux/oxnas/image/Makefile

@@ -10,8 +10,7 @@ include $(INCLUDE_DIR)/image.mk
 
 UBIFS_OPTS = -m 2048 -e 126KiB -c 4096
 
-DEVICE_VARS += DTS KERNEL_SIZE PAGESIZE BLOCKSIZE SUBPAGESIZE
-DEVICE_VARS += KERNEL_IN_UBI UBOOTENV_IN_UBI UBIFS_OPTS
+DEVICE_VARS += DTS KERNEL_SIZE UBIFS_OPTS
 
 KERNEL_LOADADDR := 0x60008000