mediatek: fix OpenWrt One ubinized image in IB

The ImageBuilder when using the profile for the OpenWrt One has been
failing because the initramfs image included in the ubinized image could
not be found.

Fix that by using the staged initramfs instead when using the
ImageBuilder.

Fixes: 797904b ("mediatek/filogic: add OpenWrt One support")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>

target/linux/mediatek/image/filogic.mk

@@ -1090,7 +1090,9 @@ define Device/openwrt_one
   UBINIZE_OPTS := -E 5
   BLOCKSIZE := 128k
   PAGESIZE := 2048
-  UBINIZE_PARTS := fip=:$(STAGING_DIR_IMAGE)/mt7981_openwrt_one-snand-u-boot.fip recovery=:$(KDIR)/tmp/openwrt-mediatek-filogic-openwrt_one-initramfs.itb \
+  UBINIZE_PARTS := fip=:$(STAGING_DIR_IMAGE)/mt7981_openwrt_one-snand-u-boot.fip \
+		   $(if $(IB),recovery=:$(STAGING_DIR_IMAGE)/mediatek-filogic-openwrt_one-initramfs.itb,\
+			      recovery=:$(KDIR)/tmp/$$(KERNEL_INITRAMFS_IMAGE)) \
 		   $(if $(wildcard $(TOPDIR)/openwrt-mediatek-filogic-openwrt_one-calibration.itb), calibration=:$(TOPDIR)/openwrt-mediatek-filogic-openwrt_one-calibration.itb)
 endef
 TARGET_DEVICES += openwrt_one