Patch merged into coreboot/master: cpu/amd/fam10h-15h: Fix link type detection and XCS buffer count setup

the following patch was just integrated into master:
commit f8549e88e243721ac1b26373a774612b66ac8ef2
Author: Timothy Pearson 
Date:   Mon Sep 7 22:26:55 2015 -0500

cpu/amd/fam10h-15h: Fix link type detection and XCS buffer count setup

The existing code did not properly detect various link attributes
    on Family 10h/15h processors.  With the addition of new HT3- and
    IOMMU-specific code, proper detection has become critical to avoid
    system deadlocks.

Fix and streamline link attribute detection.

Change-Id: If63dd97f070df4aab25a1e1a34df4b1112fff4b1
    Signed-off-by: Timothy Pearson 
    Reviewed-on: https://review.coreboot.org/12071
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth

See https://review.coreboot.org/12071 for details.

-gerrit