Fix a bug in linksys_bootcount.c that resetbc won't work on nand
with min I/O size> 2048.
Check the boot-log entry's intergrity with checksum.
Signed-off-by: Qiyuan Zhang <zhang.github@outlook.com>
Link: https://github.com/openwrt/openwrt/pull/16070
Signed-off-by: Robert Marko <robimarko@gmail.com>