tree b5f4cba116d6c9b88fb43c1ffc6fb7e323081678
parent c10374732a093da73cc66e92eae8e8a82836238e
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>