[D18] add OV5640 CSI camera support: RevA overlays
* enabled at u-boot: seco_config tool CSI0, CSI1 peripherals
* on carrier B79: CSD18REVA + CSC47REVA + CSC19REVB (CSI CN39)
* Test details:
root@seco-imx8mp-d18:~# gst-launch-1.0 -v v4l2src device=/dev/video2 ! waylandsink
root@seco-imx8mp-d18:~# gst-launch-1.0 -v v4l2src device=/dev/video3 ! waylandsink
Edited by Gianfranco Mariotti