[SeaBIOS] [patch] Add IDE_TO_AHCI config

[Kevin O'Connor]

On Tue, May 31, 2011 at 01:18:28AM +0800, Chuang, Alex wrote:
> > Can all SATA controllers be run in IDE mode?  If not, how can one know
> > which SATA controller supports the mode?
> 
> Not all SATA controllers can be run in this mode.
> That's why I set 'IDE_TO_AHCI' default to disable.
> I only confirm it's working with AMD's SATA controller.

Okay.  In that case, I think it would be better to detect the
vendor/device ids that can be supported instead of adding a new config
option.

-Kevin