[openwrt/openwrt] scripts: fix missing character '0' issue in linksys image

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/e6769d11f38f17fb4427f6022f61c4c2e1ee9d67

commit e6769d11f38f17fb4427f6022f61c4c2e1ee9d67
Author: Shiji Yang <yangshiji66 at qq.com>
AuthorDate: Sat Oct 29 22:06:24 2022 +0800

    scripts: fix missing character '0' issue in linksys image
    
    In the stock firmware of Linksys, there is a '0' after the crc checksum.
    Validated on EA6350V3, EA7300 and EA7300V2's stock images.
    
    Fixes: 892d741259 build: add a script for generating Linksys factory images
    Signed-off-by: Shiji Yang <yangshiji66 at qq.com>
---
 scripts/linksys-image.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/linksys-image.sh b/scripts/linksys-image.sh
index c3baf44844..3b4412c06e 100755
--- a/scripts/linksys-image.sh
+++ b/scripts/linksys-image.sh
@@ -14,7 +14,7 @@
 #  <VERSION>        The version number of upgrade. Not checked so use arbitrary value (8 bytes)
 #  <TYPE>           Model of target device, padded (0x20) to (15 bytes)
 #  <CRC>      	    CRC checksum of the image to flash (8 byte)
-#  <padding>	    Padding (0x20) (7 bytes)
+#  <padding>	    Padding ('0' + 0x20 *7) (8 bytes)
 #  <signature>	    Signature of signer. Not checked so use arbitrary value (16 bytes)
 #  <padding>        Padding (0x00) (192 bytes)
 #  0x0A		    (1 byte)
@@ -58,7 +58,7 @@ IMG_OUT="${IMG_IN}.new"
 dd if="${IMG_IN}" of="${IMG_TMP_OUT}"
 CRC=$(printf "%08X" $(dd if="${IMG_IN}" bs=$(stat -c%s "${IMG_IN}") count=1|cksum| cut -d ' ' -f1))
 
-printf ".LINKSYS.01000409%-15s%-8s%-7s%-16s" "${TYPE}" "${CRC}" "" "K0000000F0246434" >> "${IMG_TMP_OUT}"
+printf ".LINKSYS.01000409%-15s%-8s%-8s%-16s" "${TYPE}" "${CRC}" "0" "K0000000F0246434" >> "${IMG_TMP_OUT}"
 
 dd if=/dev/zero bs=1 count=192 conv=notrunc >> "${IMG_TMP_OUT}"