This makes it easy to grep :wakeup /proc/interrupts.
Suggested-by: NJeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>