[openwrt/openwrt] ramips: add image checks

[LEDE Commits]

mkresin pushed a commit to openwrt/openwrt.git, branch master:
https://git.lede-project.org/a8054d83dcc37f2b62ef874c18741cc60c219c61

commit a8054d83dcc37f2b62ef874c18741cc60c219c61
Author: Chen Minqiang <ptpt52 at gmail.com>
AuthorDate: Thu Jan 11 23:43:09 2018 +0800

    ramips: add image checks
    
    As long as we can't enforce image metadata, we need to use (platform)
    image checks to have at least soem kind of validation.
    
    Signed-off-by: Chen Minqiang <ptpt52 at gmail.com>
---
 target/linux/ramips/base-files/lib/upgrade/platform.sh | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index cd21001..e2ab3a6 100755
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -264,9 +264,11 @@ platform_check_image() {
 		;;
 	hc5962|\
 	mir3g|\
-	r6220)
-		# these boards use metadata images
-		return 0
+	r6220|\
+	ubnt-erx|\
+	ubnt-erx-sfp)
+		nand_do_platform_check "$board" "$1"
+		return $?;
 		;;
 	re350-v1)
 		[ "$magic" != "01000000" ] && {
@@ -275,11 +277,6 @@ platform_check_image() {
 		}
 		return 0
 		;;
-	ubnt-erx|\
-	ubnt-erx-sfp)
-		nand_do_platform_check "$board" "$1"
-		return $?;
-		;;
 	wcr-1166ds|\
 	wsr-1166)
 		[ "$magic" != "48445230" ] && {