add the "wait for disk to become ready" hack which got removed in the 2.08 version of zboot
add the "wait for disk to become ready" hack which got removed in
the 2.08 version of zboot

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