Adds a "driver" that displays the current CPU load on the Tiva's two GPIO pins.
Adds a "driver" that displays the current CPU load on the Tiva's two GPIO pins.

bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn