media: atomisp: Adjust for v4l2_subdev_state handling changes in 6.8

The atomisp driver emulates a standard v4l2 device, which also works
for non media-controller aware applications.

Part of this requires making try_fmt calls on the sensor when
a normal v4l2 app is making try_fmt calls on the /dev/video# mode.

With the recent v4l2_subdev_state handling changes in 6.8 this no longer
works, fixing this requires 2 changes:

1. The atomisp code was using its own internal v4l2_subdev_pad_config
   for this. Replace the internal v4l2_subdev_pad_config with allocating
   a full v4l2_subdev_state for storing the full try_fmt state.

2. The paths actually setting the fmt or crop selection now need to be
   passed the v4l2_subdev's active state, so that sensor drivers which
   are using the v4l2_subdev's active state to store their state keep
   working.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

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