Swift: Remove pre-poweron VRM manipulation

Swift doesn't need to run the vrm-control.sh script to set VRM
voltages, which also means it doesn't need to disable/enable their
AVS buses around it, nor bind/unbind the VRM device drivers.

Remove all of these services, and also create a new recipe for
power-workarounds.sh that was in the avsbus-control recipe so that
it can remain.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I9f1b23e870642d30c99fe4ebeba4cfee67802129
7 files changed