Patch merged into coreboot/master: nb/amd/mct_ddr3: Only initialize ECC bits once

the following patch was just integrated into master:
commit 394041b149b578507df7a037c858acbb99918dc4
Author: Timothy Pearson 
Date:   Sun Apr 24 20:56:31 2016 -0500

nb/amd/mct_ddr3: Only initialize ECC bits once

The ECC check bits of all ECC DIMMS were inadvertently initialized
    twice in the same routine, significantly delaying startup.  Part
    of this was related to an obsolete MCA workaround that has been
    fixed through multiple commits, therefore the workaround is no
    longer needed.

Only initialize the ECC check bits once.

Change-Id: I90ac1147d9b006794d29b866a9cb5b7ead8f01e7
    Signed-off-by: Timothy Pearson 
    Reviewed-on: https://review.coreboot.org/14503
    Tested-by: build bot (Jenkins)
    Tested-by: Raptor Engineering Automated Test Stand 
    Reviewed-by: Martin Roth 
    Reviewed-by: Paul Menzel

See https://review.coreboot.org/14503 for details.

-gerrit