[media] v4l: vsp1: wpf: Implement rotation support

Some WPF instances, on Gen3 devices, can perform 90° rotation when
writing frames to memory. Implement support for this using the
V4L2_CID_ROTATE control.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>