servo: cr50: remove jtag vref controls

Servo micro doesn't have the ability to set the jtag_vref0, so we have
to get the hardware reworked instead of setting the servo control.

BUG=none
BRANCH=none
TEST=use the cr50 console with servo micro

Change-Id: I319b32c752a68cf695ba8e38da3cbed4d69981dc
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/511342
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
3 files changed