media: i2c: imx290: Set the colorspace fields in the format

Backport from https://patchwork.linuxtv.org/project/linux-media/list/?series=9918



The colorspace fields were left untouched in imx290_set_fmt
which lead to a v4l2-compliance failure.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>