tree a776d446e34bf62c2fc4d19726b3cfb222dda13a
parent 5c7c388a06767fbe48f093a7df7137309f3fed55
author Matt Spinler <spinler@us.ibm.com> 1482253153 -0600
committer Matt Spinler <spinler@us.ibm.com> 1482266997 -0600

Witherspoon AVS Bus Control

Perform an AVS bus workaround on the VRMs attached
to the processor.  The AVS bus is how the processor
talks to the VRMs.

After the workaround, this also provides services to
disable the AVS bus so a VRM override can be run, and
then enable it again afterwards.

Change-Id: I68c48ffaafe5d7125556aa9d36cf11bf55ca93ac
Signed-off-by: Matt Spinler <spinler@us.ibm.com>