media: atomisp: Fix typo "accesible"

Trivial fix.

Link: https://lore.kernel.org/linux-media/20210318202223.164873-2-ribalda@chromium.org


Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>