staging: vc04_services: mmal-vchiq: fix typo in comment

Correct typo from 'witin' to 'within' in comment.

Signed-off-by: Jongwoo Han <jongwooo.han@gmail.com>
Link: https://lore.kernel.org/r/20230130164250.51877-1-jongwooo.han@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>