servod: peppy: Add ADCs for power measurement.

BUG=none
TEST=manual
1. Emerge it
cros_workon --host start hdctools
sudo emerge hdctools

2. launch servod on servo V1 & swing the mux to the adcs
sudo servod -c peppy.xml
dut-control i2c_mux:loc0

3.  Take measurments
peppy_mv=`dut-control -i | grep _mv | cut -d' ' -f1`
peppy_ma=`dut-control -i | grep _ma | cut -d' ' -f1`
peppy_mw=`dut-control -i | grep _mw | cut -d' ' -f1`
dut-control $peppy_mv
dut-control $peppy_ma
dut-control $peppy_mw

Values read make sense.

Change-Id: Ib7925fb0424d12843087f529eeeb0c5d11164311
Reviewed-on: https://gerrit.chromium.org/gerrit/60884
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Tested-by: Dave Parker <dparker@chromium.org>
Commit-Queue: Dave Parker <dparker@chromium.org>
2 files changed