Capacitive touch example.

This example demonstrates the capacitive touch capability
of the EFM32 Happy 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 SLSTK3400A_EFM32HG Starter Kit
Device: EFM32HG322F64
