arm/omap: use system_wq in mailbox

With cmwq, there's no reason to use a separate workqueue for mailbox.
Use the system_wq instead.  mbox->rxq->work is sync flushed in
omap_mbox_fini() to make sure it's not running on any cpu, which makes
sure that no mbox work is running when omap_mbox_exit() is entered.

Signed-off-by: Tejun Heo <[email protected]>
Acked-by: Hari Kanigeri <[email protected]>
Cc: Tony Lindgren <[email protected]>
Cc: [email protected]

0 files changed, 0 insertions, 0 deletions