tree 6d4a34df579dd2d70f3187b5fbffa1a5e16c069b
parent 4c1bdac857ffba333d438a9f54115a189fa2481a
author Samuel Messing <smrz@google.com> 1535636692 -0400
committer Samuel Messing <smrz@google.com> 1535636692 -0400

Add CONFIG_USB_SERIAL and CONFIG_USB_SERIAL_CP210x.

These enable the board to use usb-over-serial to control remote GPIO
pins. The drive-by-wire project uses these to control LEDs in our first
prototype form factor.

Change-Id: I1e39b1deb732a897646e396dcf3496e2a1edf32a