[openwrt/openwrt] ramips: remove factory image for TP-Link Archer C20 v1

[LEDE Commits]

adrian pushed a commit to openwrt/openwrt.git, branch openwrt-21.02:
https://git.openwrt.org/425c4c89b0ba724738e8c57c2d3e8dfb770f5746

commit 425c4c89b0ba724738e8c57c2d3e8dfb770f5746
Author: Stijn Segers <foss at volatilesystems.org>
AuthorDate: Fri Feb 19 00:53:26 2021 +0100

    ramips: remove factory image for TP-Link Archer C20 v1
    
    Similarly to the Archer C2 v1, the Archer C20 v1 will brick when one
    tries to flash an OpenWrt factory image through the TP-Link web UI.
    The wiki page contains an explicit warning about this [1].
    
    Disable the factory image altogether since it serves no purpose.
    
    [1] https://openwrt.org/toh/tp-link/tp-link_archer_c20_v1#installation
    
    Signed-off-by: Stijn Segers <foss at volatilesystems.org>
    (cherry picked from commit 0265cba40ad4f2b8ff4473ada123c35b53ffd97a)
---
 target/linux/ramips/image/mt7620.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index 7f649aff88..f8905ad2b7 100644
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -981,6 +981,7 @@ define Device/tplink_archer-c20-v1
   TPLINK_HWID := 0xc2000001
   TPLINK_HWREV := 0x44
   TPLINK_HWREVADD := 0x1
+  IMAGES := sysupgrade.bin
   DEVICE_MODEL := Archer C20
   DEVICE_VARIANT := v1
   DEVICE_PACKAGES := kmod-mt76x0e kmod-usb2 kmod-usb-ohci \