[coreboot] SimNOW VGA int 1a

[Myles Watson]

SimNOW goes off into the weeds when int 1a is called.  Here's the trace of
execution:

C000:0003 E9E200           jmp loc_00e8
C000:00E8 60               pusha
C000:00E9 E84331           call loc_322f
C000:322F B800C0           mov ax,c000
C000:3232 8ED8             mov ds,ax
C000:3234 BE0000           mov si,0000
C000:3237 BB2C00           mov bx,002c
C000:323A 8B17             mov dx,[bx]
C000:323C BB2E00           mov bx,002e
C000:323F 8B0F             mov cx,[bx]
C000:3241 B802B1           mov ax,b102
C000:3244 CD1A             int 1a
FFFF:FFFF FF

I'm looking for the place where the interrupt vector was supposed to have
been set.

Thanks,
Myles