This patch introduces examples/mraa-uart that can be used as a general tool
for UART communication and UART settings.
The syntax mimics the one used for mraa-gpio.
This is an initial version, beware of insects.
Signed-off-by: Tapani Utriainen <tapani@technexion.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>