ath79: image: append metadata to routerstations and ja76pf2 images

This target enforces metadata check so add the necessary information. It
was previously removed because md5 sum check. When using these sysupgrade
images on ar71xx target the check would complain about them not matching.

Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>

target/linux/ath79/image/generic-ubnt.mk

@@ -210,7 +210,7 @@ define Device/ubnt_routerstation_common
   IMAGE_SIZE := 16128k
   IMAGES += factory.bin
   IMAGE/factory.bin := append-rootfs | pad-rootfs | mkubntimage | check-size $$$$(IMAGE_SIZE)
-  IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | combined-image | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | combined-image | append-metadata | check-size $$$$(IMAGE_SIZE)
 #  IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE) | sysupgrade-tar rootfs=$$$$@ | append-metadata
   KERNEL := kernel-bin | append-dtb | lzma | pad-to $$(BLOCKSIZE)
   KERNEL_INITRAMFS := kernel-bin | append-dtb

target/linux/ath79/image/generic.mk

@@ -653,7 +653,7 @@ define Device/jjplus_ja76pf2
   DEVICE_VENDOR := jjPlus
   DEVICE_MODEL := JA76PF2
   DEVICE_PACKAGES += -kmod-ath9k -swconfig -wpad-mini -uboot-envtools fconfig
-  IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | combined-image | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | combined-image | append-metadata | check-size $$$$(IMAGE_SIZE)
 #  IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE) | sysupgrade-tar rootfs=$$$$@ | append-metadata
   KERNEL := kernel-bin | append-dtb | lzma | pad-to $$(BLOCKSIZE)
   KERNEL_INITRAMFS := kernel-bin | append-dtb