Recently all targets have been updated to call nand_do_upgrade directly.
It's not needed anymore to leave a magic /tmp/sysupgrade-nand-path mark
during image check.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Acked-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 47079