power_status: Add voltage_max_design for battery stat

Add voltage_max_design field for battery data.

BUG=chrome-os-partner:20051
TEST=Run test and ensure the data is correct

Change-Id: I2d8d8ee9b8d9326c3ba90eec70b54b4d08b4415f
Signed-Off-by: Penny Chiu <pchiu@nvidia.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/58061
Reviewed-by: Todd Broch <tbroch@chromium.org>
1 file changed