sama5d3xek: fix FIT image build

The build is processed on BUILD folder, so we need copy the *.its file
from SOURCE folder. Then do the build.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
qt5-apps: applicationlauncher: qt demo work for both 800x480, 480x272

We modify the launch.sh to call different shell when in different screen
resolution.
With this patch, qt5 demo can work normally with PDA4.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>