media: atomisp: ov2680: Implement selection support

Implement selection support. Modelled after ov5693 selection support,
but allow setting sizes smaller than crop-size through set_fmt since
that was already allowed.

Link: https://lore.kernel.org/r/20230529103741.11904-7-hdegoede@redhat.com



Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>