PM: runtime: remove kernel-doc warnings

remove make W=1 warnings

drivers/base/power/runtime.c:926: warning: Function parameter or
member 'timer' not described in 'pm_suspend_timer_fn'

drivers/base/power/runtime.c:926: warning: Excess function parameter
'data' description in 'pm_suspend_timer_fn'

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/base/power/runtime.c

@@ -951,7 +951,7 @@ static void pm_runtime_work(struct work_struct *work)
 
 /**
  * pm_suspend_timer_fn - Timer function for pm_schedule_suspend().
- * @data: Device pointer passed by pm_schedule_suspend().
+ * @timer: hrtimer used by pm_schedule_suspend().
  *
  * Check if the time is right and queue a suspend request.
  */