Align sysupgrade format

msm89xx/image/Makefile

@@ -18,17 +18,6 @@ define Build/aboot-img
 	mv $@.new $@
 endef
 
-define Build/msm89xx-sysupgrade
-	rm -rf $@.sysupgrade-tmp
-	mkdir -p $@.sysupgrade-tmp
-	cp $(IMAGE_KERNEL) $@.sysupgrade-tmp/boot
-	cp $@ $@.sysupgrade-tmp/rootfs
-	cd $@.sysupgrade-tmp && \
-		tar -cf $@.new --owner=0 --group=0 boot rootfs
-	mv $@.new $@
-	rm -rf $@.sysupgrade-tmp
-endef
-
 ### Devices ###
 define Device/Default
 	PROFILES := Default
@@ -36,7 +25,7 @@ define Device/Default
 	IMAGES := boot.img system.img sysupgrade.bin
 	IMAGE/boot.img := append-kernel | append-metadata
 	IMAGE/system.img := append-rootfs | append-metadata
-	IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | msm89xx-sysupgrade | append-metadata
+	IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
 	DEVICE_DTS_DIR := $(DTS_DIR)/qcom
 	DEVICE_DTS = $$(SOC)-$(lastword $(subst _, ,$(1)))
 	CMDLINE := "earlycon console=ttyMSM0,115200 rw"