vc04_services: mmal-vchiq: Use bool for vchiq_mmal_component.in_use

vc04_services: mmal-vchiq: Use bool for vchiq_mmal_component.in_use

In commit 7967656ffbfa ("coding-style: Clarify the expectations around
bool") the check to dis-allow bool structure members was removed from
checkpatch.pl. It promotes bool structure members to store boolean
values. This enhances code readability.

Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20221118084244.199909-3-umang.jain@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>