servod: add sweetberry as servod device.

In we introduce sweetberry to expose its i2c
interface over usb. This change is to leverage that to use sweetberry
as a servod device. It adds the necessary configurations,
and also introduces a driver, that manages the servod i2c
ports when reading INAs through servod for sweetberry.

TEST=sudo servod -c servo_sweetberry_rails.xml
dut-control -p $PORT j2_1_mv

Change-Id: I06220510e7051bd7c559856a4b5d252e9f723ffc
Commit-Ready: Ruben Rodriguez Buchillon <>
Tested-by: Ruben Rodriguez Buchillon <>
Reviewed-by: Todd Broch <>
6 files changed