Correct the RAM checking code to _not_ check the range from 640 KB - 1 MB,

Correct the RAM checking code to _not_ check the range from 640 KB - 1 MB,
as that is not RAM but used for other stuff.

First try at PCI init added to src/mainboard/tyan/s1846/Config.lb.

Use a real payload (FILO) per default now.

Note: this cannot boot a payload, yet, but it gets a lot further now.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2623 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1