Ventana: Updated pre-built bootloader images
built from gateworks_v2015.04 2359cd1e15e7734e3c79c41aa22fed45b8412c84
https://github.com/Gateworks/u-boot-imx6/tree/2359cd1e15e7734e3c79c41aa22fed45b8412c84
U-Boot SPL 2015.04-g2359cd1 (Jun 04 2018 - 11:15:21)
Summarized cumulative changes include:
- add support for the GW5901
- add support for the GW5902
- add support for the GW5908
Signed-off-by: Tim Harvey <tharvey@…>