[source] ramips: add factory firmware for Tp-Link C20i/C50

[LEDE Commits]

mkresin pushed a commit to source.git, branch master:
https://git.lede-project.org/cfdd3f260e13d78feb232831c220e190e927c290

commit cfdd3f260e13d78feb232831c220e190e927c290
Author: Henryk Heisig <hyniu at o2.pl>
AuthorDate: Fri May 5 17:07:28 2017 +0200

    ramips: add factory firmware for Tp-Link C20i/C50
    
    TP-Link firmware doesn't accept sysupgrade.bin with metadata.
    
    Signed-off-by: Henryk Heisig <hyniu at o2.pl>
---
 target/linux/ramips/image/mt7620.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index 71b651c..f0710e6 100644
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -33,7 +33,9 @@ define Device/ArcherC20i
   SUPPORTED_DEVICES := c20i
   KERNEL := $(KERNEL_DTB)
   KERNEL_INITRAMFS := $(KERNEL_DTB) | tplink-header ArcherC20i -c
+  IMAGE/factory.bin := append-kernel | tplink-header ArcherC20i -j
   IMAGE/sysupgrade.bin := append-kernel | tplink-header ArcherC20i -j | append-metadata
+  IMAGES += factory.bin
   DEVICE_TITLE := TP-Link ArcherC20i
 endef
 TARGET_DEVICES += ArcherC20i
@@ -43,7 +45,9 @@ define Device/ArcherC50
   SUPPORTED_DEVICES := c50
   KERNEL := $(KERNEL_DTB)
   KERNEL_INITRAMFS := $(KERNEL_DTB) | tplink-header ArcherC50 -c
+  IMAGE/factory.bin := append-kernel | tplink-header ArcherC50 -j
   IMAGE/sysupgrade.bin := append-kernel | tplink-header ArcherC50 -j | append-metadata
+  IMAGES += factory.bin
   DEVICE_TITLE := TP-Link ArcherC50
 endef
 TARGET_DEVICES += ArcherC50