restore VGA fonts on VT switch

Avoids an unusable screen when switching to a VT with a custom VGA font
from X.  While it is possible to modify the xserver to invoke an ioctl
for this kettenis@ points out the xserver may have crashed so doing it
in the kernel is preferred.

Problem reported by and patch from John Carmack.  Changed slightly to
do the vga_restore_fonts() (write to video memory) call before
vga_setfont() (pointing the character generator at it) at the suggestion
of kettenis@.

ok kettenis@

0 files changed, 0 insertions, 0 deletions