Change block size handling and add untested support for Japanese 1.2mb floppies.  From <minoura@kw.netlaputa.or.jp>.
Change block size handling and add untested support for Japanese 1.2mb
floppies.  From <minoura@kw.netlaputa.or.jp>.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars