[source] ramips: EX3700: rename factory.bin to factory.chk

[LEDE Commits]

mkresin pushed a commit to source.git, branch master:
https://git.lede-project.org/8a13895a2e3fc749e0038b50e7b6b4988505179b

commit 8a13895a2e3fc749e0038b50e7b6b4988505179b
Author: Thibaut VARENE <hacks at slashdirt.org>
AuthorDate: Sun Jul 30 12:02:55 2017 +0200

    ramips: EX3700: rename factory.bin to factory.chk
    
    The stock firmware upgrade interface requires the file to end with a .chk
    extension.
    
    Signed-off-by: Thibaut VARENE <hacks at slashdirt.org>
---
 target/linux/ramips/image/mt7620.mk | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index d435e9f..84999f0 100644
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -145,8 +145,8 @@ define Device/ex3700
   DTS := EX3700
   BLOCKSIZE := 4k
   IMAGE_SIZE := 7744k
-  IMAGES += factory.bin
-  IMAGE/factory.bin := $$(sysupgrade_bin) | check-size $$$$(IMAGE_SIZE) | netgear-chk
+  IMAGES += factory.chk
+  IMAGE/factory.chk := $$(sysupgrade_bin) | check-size $$$$(IMAGE_SIZE) | netgear-chk
   DEVICE_PACKAGES := -kmod-mt76 kmod-mt76x2
   DEVICE_TITLE := Netgear EX3700
 endef