[media] v4l: vsp1: Pass pipe pointer to entity configure functions

Pass the pipe explicitly instead of retrieving it through media
entities. This decouples device state stored in the pipeline from the
active state stored in entities, preparing for dynamic pipeline
creation.

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