[coreboot] [PATCH] v2: i810: Add support for multiple DIMMs

[Uwe Hermann]

See patch.

This is the result of many hours of debugging and testing; parts of the
patch are based on a previous version by Elia Yehuda 
(hence both Signed-off-by's).

Remaining TODO list for later:

- Correctly determine/set CAS latency, use it in do_ram_command().

- Commit the BUFF_SC patch or an improved version of it; I'll gather
   some more sample values so we can findout whether or not those numbers
   are the same for all boards.

- Fix onboard VGA.

Anything I forgot?

Uwe.