ARM: dts: colibri-imx6ull: enable default peripherals

For NAND modules Toradex does not provide any device-tree overlays. But
we always had a default display output enabled on NAND modules as well
as touchscreens that are placed on displays which can easily be plugged
into those carrier boards. Do reenable these displays and touchscreen
output on all device-trees that are used on NAND modules.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>