This is required as "backup" itself does not gets updated automatically,
contrary to it's LFS file suggesting by having a "PAK_VER" number.

In order to fix #12619, it is therefore necessary to ship the backup
files with Core Update 157.

Partially fixes: #12619

Signed-off-by: Peter Müller <peter.mueller(a)ipfire.org>
---
 config/rootfiles/core/157/filelists/backup | 1 +
 1 file changed, 1 insertion(+)
 create mode 120000 config/rootfiles/core/157/filelists/backup

diff --git a/config/rootfiles/core/157/filelists/backup b/config/rootfiles/core/157/filelists/backup
new file mode 120000
index 000000000..38e28a8b4
--- /dev/null
+++ b/config/rootfiles/core/157/filelists/backup
@@ -0,0 +1 @@
+../../../common/backup
\ No newline at end of file
-- 
2.26.2