Add int format_unknown_device(const char *device, const char *path, const char *fs_type);
to roots.cpp

Signed-off-by: sndnvaps <sndnvaps@gmail.com>
update roots.cpp
use snprintf() to again sprintf()

Signed-off-by: sndnvaps <sndnvaps@gmail.com>
Merge pull request #5 from sndnvaps/cm-10.2

Merge new change into 1024team