PM / wakeup: only recommend "call"ing device_init_wakeup() once

I'll admit admit it: I've written bad driver code that tries to
configure a device's wake IRQ without having called device_init_wakeup()
first. But do you really have to ask ask me twice?
Signed-off-by: NBrian Norris <briannorris@chromium.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/base/power/wakeup.c

@@ -298,7 +298,7 @@ int device_wakeup_attach_irq(struct device *dev,
 
 	ws = dev->power.wakeup;
 	if (!ws) {
-		dev_err(dev, "forgot to call call device_init_wakeup?\n");
+		dev_err(dev, "forgot to call device_init_wakeup?\n");
 		return -EINVAL;
 	}