Add LED Indication for RX/TX
Add LED Indication for RX/TX

An LED wired to CBUS0 & CBUS1 has been added to show RX/TX activity.
Connected to +5V and both lines have 220R.

Signed-Off-By: Sophie Haynes<6367c7a6857e2e54cec9a9e3aa1d988b407c21bb@linaro.org>

96boards/96boards-kicad-mezzanine-template