[coreboot-gerrit] Patch merged into coreboot/master: amd/amdmct/mct_ddr3: Use training values from previous boot if possible

the following patch was just integrated into master:
commit df1fb9c05f822b5a84c802617d3bad7d049dcd76
Author: Timothy Pearson 
Date:   Thu Jun 4 00:11:03 2015 -0500

amd/amdmct/mct_ddr3: Use training values from previous boot if possible

DRAM training accounts for most of the romstage startup time, yet
    if the hardware configuration has not changed from the previous boot
    the previously discovered training values are still valid.  Use them
    if the DIMM configuration has not changed since the last boot.

The SPD values of all installed DIMMs are hashed and stored in the S3
    resume data area of the main system Flash device.  If a DIMM is changed
    the hash will almost certainly change as well, forcing retraining on next
    boot.

Change-Id: I37ed277b16476d38e4af76c6ae827a575c6b017d
    Signed-off-by: Timothy Pearson 
    Reviewed-on: http://review.coreboot.org/11976
    Tested-by: Raptor Engineering Automated Test Stand 
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

See http://review.coreboot.org/11976 for details.

-gerrit