Mandelbrot image example, using TFT.

This example demonstrate driving the EFM32-Gxxx-DK kit's TFT-display
from the EFM32 Gecko.

WARNING:
SD2119 driver and GLIB graphics library are not intended for production
purposes, and are included here to illustrate TFT display driving only.
These components are subject to changes in API/usage and there will be
no effort to keep compatibility, or to support this software in any way.

Board:  Silicon Labs EFM32-Gxxx-DK Development Kit
Device: EFM32G290F128 and EFM32G890F128
