[coreboot] Patch merged into master: b53bf7f northbridge/intel/i440bx: Registered SDRAM modules support and fixes

the following patch was just integrated into master:
commit b53bf7f4780362a7cc92d9947891ea492ca7163d
Author: Keith Hui 
Date:   Tue Aug 2 22:28:14 2011 -0400

northbridge/intel/i440bx: Registered SDRAM modules support and fixes

Adds support for initializing registered SDRAM modules on
    Intel 440BX northbridge.

Drops unneeded romcc-inspired programming tricks.

Only set nbxecc flags (see 440BX datasheet, page 3-16) when
    a non-ECC module has been detected in a row via SPD; also
    drops an unneeded intermediate variable used in setting them.

Boot tested on ASUS P2B-LS with regular and registered ECC
    SDRAM under Linux and memtest86+.

Change-Id: Idc99d49567cca55f819d6b0e98952b1c3256498a
    Signed-off-by: Keith Hui

See http://review.coreboot.org/128 for details.

-gerrit