media: mali-c55: Initialize the ISP in enable_streams()

media: mali-c55: Initialize the ISP in enable_streams()

The Mali C55 driver initializes the ISP in two points:

1) At probe time it disables ISP blocks by configuring them in bypass
   mode
2) At enable_streams() it initializes the crop rectangles and the image
   processing pipeline using the current image format

However, as ISP blocks are configured by userspace, if their
configuration is not reset, from the second enable_streams() call
onwards the ISP configuration will depend on the previous streaming
session configuration.

To re-initialize the ISP completely at enable_streams() time consolidate
the ISP block bypass configuration and the image processing path
configuration in a single function to be called at enabled_streams()
time.

Cc: stable@vger.kernel.org
Fixes: d5f281f3dd29 ("media: mali-c55: Add Mali-C55 ISP driver")
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>