For non-console vgafb, force rasops to initialize it as a monochrome resource, since we can't program the colormap anyway.
For non-console vgafb, force rasops to initialize it as a monochrome resource,
since we can't program the colormap anyway.

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