ALSA: hda: comment typo fix

fix a typo in comment for is_in_nid_list().
Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/hda/hda_codec.c

@@ -2789,7 +2789,7 @@ int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
 }
 
 /*
- * Helper for automatic ping configuration
+ * Helper for automatic pin configuration
  */
 
 static int is_in_nid_list(hda_nid_t nid, hda_nid_t *list)