rtc: rtc-twl: Fix missing device_init_wakeup() when booted with device tree

When booted in legacy mode device_init_wakeup() gets called by drivers/mfd/twl-core.c when the children are initialized. However, when booted using device tree, the children are created with of_platform_populate() instead add_children().

This means that the RTC driver will not have device_init_wakeup() set, and we need to call it from the driver probe like RTC drivers typically do.

Without this we cannot test PM wake-up events on omaps for cases where there may not be any physical wake-up event.

---

This fix is for the -rc cycle please.

@@ -524,6 +524,7 @@ static int twl_rtc_probe(struct platform_device *pdev)
 	}
 
 	platform_set_drvdata(pdev, rtc);
+	device_init_wakeup(&pdev->dev, 1);
 	return 0;
 
 out2: