[coreboot] epia-cn patch

[bari]

It looks good!

I'll give my full ack after I have tested the new patch on actual 
hardware today.

I hope we can tackle the issue with SATA after that.

Thanks again Aaron.

-Bari

aaron lwe wrote:
> Hi all,
>
> I've cleaned up the code, adding back the comments and use defined
> macro to replace magic values. I've also removed acpi related files
> since I'm not sure of its ownership. Thank you all for your comments.
>
> -Aaron
>