Capacitive touch example.

This example demonstrates the capacitive touch capability
of the EFM32 Zero Gecko Starter Kit.

It demonstrates the use of CAPSENSE and DISPLAY drivers.
Pressing T1/T2 touch pads will decrease/increase the counter shown on the LCD.

Board:  Silicon Labs EFM32ZG_STK3200 Starter Kit
Device: EFM32ZG222F32
