Patch merged into coreboot/master: nb/amd/mct_ddr3: Skip nibble training when current DIMM is not x4

the following patch was just integrated into master:
commit 263c679075816a0db146ff5fa6b94689837ff696
Author: Timothy Pearson 
Date:   Fri Apr 29 01:34:08 2016 -0500

nb/amd/mct_ddr3: Skip nibble training when current DIMM is not x4

Change-Id: I1f5b024606093dc81de3f3d69b7a43e20141b709
    Signed-off-by: Timothy Pearson 
    Reviewed-on: https://review.coreboot.org/14542
    Tested-by: build bot (Jenkins)
    Tested-by: Raptor Engineering Automated Test Stand 
    Reviewed-by: Martin Roth

See https://review.coreboot.org/14542 for details.

-gerrit