[coreboot-gerrit] Patch merged into coreboot/master: northbridge/amd/amdht: Add isochronous setup support

the following patch was just integrated into master:
commit 50001b80f54c3d1cdd926102c68d33e549541205
Author: Timothy Pearson 
Date:   Tue Aug 11 17:47:48 2015 -0500

northbridge/amd/amdht: Add isochronous setup support

The coherent fabric on all Family 10h/15h devices supports
    isochronous mode, which is required for IOMMU operation.

Add initial support for isochronous operation.

Change-Id: Idd7c9b94a65f856b0059e1d45f8719d9475771b6
    Signed-off-by: Timothy Pearson 
    Reviewed-on: http://review.coreboot.org/12042
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth

See http://review.coreboot.org/12042 for details.

-gerrit