Add 8x8 and 8x16 cp437 fonts from FreeBSD

Obtained via:

uudecode /usr/share/syscons/fonts/cp437-8x16.fnt
./bin2hex cp437-8x16 > cp437-8x16.hex

uudecode /usr/share/syscons/fonts/cp437-8x8.fnt
./bin2hex cp437-8x8 > cp437-8x8.hex
Add width and height comments