Haiku now boots in UEFI mode

As some may have noticed, my UEFI branch got merged in November, purely by accident too! However, until now, we still haven't been able to boot to the desktop. Whilst still in development, the addition of a simple framebuffer driver and a crucial fix by Henry has enabled Haiku to now boot all the way to the desktop using QEMU.In today's world, an important milestone.