From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Sun, 28 Aug 2016 20:38:58 +0200
Subject: ar71xx: backport support for new TP-Link region codes

Generate flashable images for the Archer C7 v2 with current stock firmware
again.

diff --git a/target/linux/ar71xx/image/Makefile b/target/linux/ar71xx/image/Makefile
index 9a7acbd..2fef79bc 100644
--- a/target/linux/ar71xx/image/Makefile
+++ b/target/linux/ar71xx/image/Makefile
@@ -58,13 +58,14 @@ define Build/mktplinkfw
 		-o $@.new \
 		-j -X 0x40000 \
 		-a $(call rootfs_align,$(FILESYSTEM)) \
-		$(if $(findstring sysupgrade,$1),-s) && mv $@.new $@ || rm -f $@
+		$(wordlist 2,$(words $(1)),$(1)) \
+		$(if $(findstring sysupgrade,$(word 1,$(1))),-s) && mv $@.new $@ || rm -f $@
 endef
 
 # -c combined image
 define Build/mktplinkfw-initramfs
 	$(STAGING_DIR_HOST)/bin/mktplinkfw \
-		-H $(TPLINK_HWID) -W $(TPLINK_HWREV) -F $(TPLINK_FLASHLAYOUT) -N OpenWrt -V $(REVISION) \
+		-H $(TPLINK_HWID) -W $(TPLINK_HWREV) -F $(TPLINK_FLASHLAYOUT) -N OpenWrt -V $(REVISION) $(1) \
 		-k $@ \
 		-o $@.new \
 		-s -S \
@@ -292,6 +293,9 @@ define Device/archer-c7-v2
     BOARDNAME := ARCHER-C7
     DEVICE_PROFILE := ARCHERC7
     TPLINK_HWID := 0xc7000002
+    IMAGES := sysupgrade.bin factory.bin factory-us.bin factory-eu.bin
+    IMAGE/factory-us.bin := append-rootfs | mktplinkfw factory -C US
+    IMAGE/factory-eu.bin := append-rootfs | mktplinkfw factory -C EU
 endef
 TARGET_DEVICES += archer-c5 archer-c7-v1 archer-c7-v2