This allows to obtain detailed diagnostic information about the DSL
connection from the modem. The script is copied from the corresponding
packages for VDSL modems.
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
Link: https://patchwork.ozlabs.org/project/openwrt/patch/20241019174041.1281093-4-jan@3e8.eu/
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>