atmel qte demo: add xplained rootfs post process command (modprobe g_serial module)
atmel qte demo: add xplained rootfs post process command (modprobe g_serial module)

Signed-off-by: Patrice Vilchez <f5b3e117f41d6e8976e1c299797145eefefef082@atmel.com>

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