vc04_services: bcm2835-codec: Set crop_height for compressed formats

In particular for the encoder where the CAPTURE format dictates
the parameters given to the codec we need to be able to set the
value passed as the crop_height for the compressed format.
There's no crop available for cropped modes, so always set
crop_height to the requested height.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>