[coreboot] i2c-i810 code

[joe at smittys.pointclark.net]

Quoting joe at smittys.pointclark.net:

> Quoting Uwe Hermann <uwe at hermann-uwe.de>:
>
>> What exactly do you intend to do? Where's this code needed?
>>
> This code will enable communications with the Conexant CX25873 tv-out
> chip via i2c through the northbridge GPIO lines. Then I can program
> the tv-out registers and initialize it. I'm still not exactly sure
> where this code will run. If can run before VGA is initialized that
> would be great. But it may have to run after, to get the correct clock
> and timing signals from the northbridge graphics, which means a
> modification to the coreboot core code.
>
Ok, looks like it just uses the default init. Also looks like I won't  
have to modify any coreboot core code to run the i2c-i810 after VGA is  
initialized. I can just setup a vga.c file in the northbridge for a  
custom vga init, and call it from there. Kind of like Corey did for  
the Via CN700, thanks Corey :-)

Thanks - Joe