Patch merged into coreboot/master: amd/mct/ddr3: Fix incorrect DQ mask calculation

the following patch was just integrated into master:
commit 21b01b80d6a11a24d69a3e7ccd7c113681b6dcee
Author: Timothy Pearson 
Date:   Mon Jan 9 12:13:52 2017 -0600

amd/mct/ddr3: Fix incorrect DQ mask calculation

On AMD DDR3 platforms, the upper DQMask was incorrectly
    calculated, leading to undefined behaviour and possible
    DRAM training faults.  Use the correct calculation for
    the upper DQMask.

Found-by: Coverity Scan #1347394 #1347393
    Change-Id: If3190eb7c30f1f00d6fd8b751bc1761c9d119782
    Signed-off-by: Timothy Pearson 
    Reviewed-on: https://review.coreboot.org/18068
    Tested-by: build bot (Jenkins)
    Tested-by: Raptor Engineering Automated Test Stand 
    Reviewed-by: Martin Roth 
    Reviewed-by: Nico Huber 
    Reviewed-by: Paul Menzel

See https://review.coreboot.org/18068 for details.

-gerrit