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>
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 1c0b33b..6447754 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2789,7 +2789,7 @@
 }
 
 /*
- * Helper for automatic ping configuration
+ * Helper for automatic pin configuration
  */
 
 static int is_in_nid_list(hda_nid_t nid, hda_nid_t *list)