iio:tcs3472: Use iio_push_to_buffers_with_timestamp()

Makes the code a bit shorter and less ugly.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/light/tcs3472.c

@@ -192,10 +192,8 @@ static irqreturn_t tcs3472_trigger_handler(int irq, void *p)
 		len += 2;
 	}
 
-	if (indio_dev->scan_timestamp)
-		*(s64 *)((u8 *)data->buffer + ALIGN(len, sizeof(s64)))
-			= iio_get_time_ns();
-	iio_push_to_buffers(indio_dev, data->buffer);
+	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+		iio_get_time_ns());
 
 done:
 	iio_trigger_notify_done(indio_dev->trig);