Note that the old ad-hoc method did not explicitly align backup data
to 64 KiB boundaries.
Signed-off-by: Rodrigo Balerdi <lanchon@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16505
Signed-off-by: Robert Marko <robimarko@gmail.com>
(cherry picked from commit 5583d2318966d5d5dcdbdec2e34b8815d3f6419a)
Link: https://github.com/openwrt/openwrt/pull/17097
Signed-off-by: Petr Štetiar <ynezz@true.cz>
1eade612f9