repair build of boot code where it uses an undefind __ashldi3 on some archs boot code uses 32-bit blknos anyway
repair build of boot code where it uses an undefind __ashldi3 on some archs
boot code uses 32-bit blknos anyway

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