mfd: max77541: Fix wakeup source leaks on device unbind

Device can be unbound, so driver must also release memory for the wakeup
source.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/max77541.c

···
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to initialize IRQ\n");
 
-	ret = device_init_wakeup(dev, true);
+	ret = devm_device_init_wakeup(dev);
 	if (ret)
 		return dev_err_probe(dev, ret, "Unable to init wakeup\n");