Running the devfreq monitor in a normal-priority workqueue can result in the devfreq mutex lock being held for a while when the monitor worker sleeps inside update_devfreq(). Freeing up the devfreq mutex lock is important to ensure timely devfreq boosts, so run the monitor workqueue in a high-priority workqueue to reduce the lock duration. Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>