target/imagebuilder: add missing package index (fixes #16675)

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

SVN-Revision: 40968

target/imagebuilder/Makefile

@@ -50,6 +50,7 @@ $(BIN_DIR)/$(IB_NAME).tar.bz2: clean
 	  | $(XARGS) rm -rf
 	find $(STAGING_DIR_HOST)/bin -maxdepth 1 -type f -perm -u=x \
 	  | $(XARGS) $(SCRIPT_DIR)/bundle-libraries.sh $(PKG_BUILD_DIR)/staging_dir/host/bin
+	$(MAKE) -C $(PKG_BUILD_DIR) package_index
 	$(TAR) c -C $(BUILD_DIR) $(IB_NAME) | bzip2 -c > $@
 
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