Spleen 32x64 provides my 14" 2560x1600 display with the ancestral 80x25,
BSD standard console. We already include it in contrib, and it is built
for the runtime vt(4) font directory, but was previously unavailable to
the bootloader. Enable it in the build.
Bugs: This is only necessary if using a high DPI display, and in that
case the font isn't really 64pt.
MFC after: 3 days