arm: dts: dra72-evm-common: Add entries for the CSI2 cameras

Add device nodes for CSI2 camera board OV5640.
Add the CAL port nodes with the necessary linkage to the ov5640 nodes.

Signed-off-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>