[coreboot-gerrit] Patch merged into coreboot/master: nb/amd/mct_ddr3: Use antiphase to better center DQS window

the following patch was just integrated into master:
commit 01b9f8e4c221b3ae8167579ab81bb6c829fb8070
Author: Timothy Pearson 
Date:   Thu Aug 27 15:10:19 2015 -0500

nb/amd/mct_ddr3: Use antiphase to better center DQS window

The BKDG recommends the use of an antiphase window detection
    algorithm to ensure that the DQS data eye is properly centered.

TEST: Booted both with DIMMs known to move the data eye into the
    prior clock phase and DIMMs known to keep the data eye in the
    current clock phase.

Change-Id: I1d85fddd45197ca82dcaa46fe863e64589712d1f
    Signed-off-by: Timothy Pearson 
    Reviewed-on: https://review.coreboot.org/12059
    Tested-by: build bot (Jenkins)
    Reviewed-by: Edward O'Callaghan 
    Reviewed-by: Martin Roth

See https://review.coreboot.org/12059 for details.

-gerrit