staging: vc04_services: vchiq-mmal: Fixed tab styling issue in mmal-vchiq.c

This cahnge fixes a checkpatch error for "code indent should use tabs where possible".

compile Tested only
[Linux-next-20200722]

Signed-off-by: Anmol Karn <anmol.karan123@gmail.com>
Link: https://lore.kernel.org/r/20200723072115.408070-1-anmol.karan123@gmail.com


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