ASoC: codecs: wm8994: fix kernel-doc

Fix W=1 warning
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20200701181320.80848-7-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm8994.c

@@ -3877,6 +3877,10 @@ static void wm1811_jackdet_bootstrap(struct work_struct *work)
  *
  * @component:   WM8958 component
  * @jack:    jack to report detection events on
+ * @det_cb: detection callback
+ * @det_cb_data: data for detection callback
+ * @id_cb: mic id callback
+ * @id_cb_data: data for mic id callback
  *
  * Enable microphone detection functionality for the WM8958.  By
  * default simple detection which supports the detection of up to 6