Adds tracepoints to pm_qos_add_request, pm_qos_update_request,
pm_qos_remove_request, and pm_qos_update_request_timeout.
It's useful for checking pm_qos_class, value, and timeout_us.
Signed-off-by: NSahara <keun-o.park@windriver.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>