atmel-qt-demo-init: adapt to DRM drivers
atmel-qt-demo-init: adapt to DRM drivers

If DRM driver is probed and its fbdev emulation up & running, enable the
default mode.

Signed-off-by: Nicolas Ferre <45b517be0e5ec6dc3a39715767c1d18e090d39b4@atmel.com>

linux4sam/meta-atmel,linux4sam/meta-atmel,koenkooi/meta-atmel,alexandrebelloni/meta-atmel,alexandrebelloni/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel,alexandrebelloni/meta-atmel,koenkooi/meta-atmel,kraj/meta-atmel,koenkooi/meta-atmel,kraj/meta-atmel,kraj/meta-atmel,linux4sam/meta-atmel