- convert fat_fs_error to use %pV
- be consequent and use "supor_block *sb" instead of "supor_block *s"
- use devise name in each message.
Signed-off-by: NAlexey Fisher <bug-track@fisher-privat.net>
Signed-off-by: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>