staging: iio: meter: Remove reduntant __func__ from debug print

dev_dbg includes the function name & line number by default when dynamic
debugging is enabled. Hence__func__ is reduntant here and removed.

Signed-off-by: HariPrasath Elango <[e-mail]>
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/staging/iio/meter/ade7758_trigger.c

···
 {
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 
-	dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
+	dev_dbg(&indio_dev->dev, "(%d)\n", state);
 	return ade7758_set_irq(&indio_dev->dev, state);
 }