ASoC: ak4642: ak4642 was tested

ak4642 was tested by ms7724se board
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/ak4642.c

@@ -18,7 +18,7 @@
  * This is very simple driver.
  * It can use headphone output / stereo input only
  *
- * AK4642 is not tested.
+ * AK4642 is tested.
  * AK4643 is tested.
  */