If the DUID of the boot disk has not been provided, attempt to locate it via the boot device. This allows root on softraid to work on most architectures. For architectures that cannot clearly identify their boot device, the DUID of the boot disk can still be passed from the boot loader, as is already done for amd64 and i386.
If the DUID of the boot disk has not been provided, attempt to locate it
via the boot device. This allows root on softraid to work on most
architectures. For architectures that cannot clearly identify their boot
device, the DUID of the boot disk can still be passed from the boot loader,
as is already done for amd64 and i386.

Based on a suggestion from kettenis@

ok krw@

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