vf610: dts: Add device tree support

Add device tree files for Freescale Vybrid platform and
Toradex Colibri VF50, VF61 modules.
Device tree files are taken from upstream Kernel.
Removed the stuff which are not used/supported yet in U-Boot.

Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>