ALSA: hda - Make snd_hda_parse_nid_path() local

An exported function snd_hda_parse_nid_path() is used only inside
hda_generic.c. Let's make it a static local function for a better
code optimization.

Signed-off-by: Takashi Iwai <[e-mail]>

sound/pci/hda/hda_generic.c

···
 	return true;
 }
 
-/**
+/*
  * snd_hda_parse_nid_path - parse the widget path from the given nid to
  * the target nid
  * @codec: the HDA codec
···
  * with the negative of given value are excluded, only other paths are chosen.
  * when @anchor_nid is zero, no special handling about path selection.
  */
-bool snd_hda_parse_nid_path(struct hda_codec *codec, hda_nid_t from_nid,
+static bool snd_hda_parse_nid_path(struct hda_codec *codec, hda_nid_t from_nid,
 			    hda_nid_t to_nid, int anchor_nid,
 			    struct nid_path *path)
 {
···
 	}
 	return false;
 }
-EXPORT_SYMBOL_GPL(snd_hda_parse_nid_path);
 
 /**
  * snd_hda_add_new_path - parse the path between the given NIDs and

sound/pci/hda/hda_generic.h

···
 
 int snd_hda_get_path_idx(struct hda_codec *codec, struct nid_path *path);
 struct nid_path *snd_hda_get_path_from_idx(struct hda_codec *codec, int idx);
-bool snd_hda_parse_nid_path(struct hda_codec *codec, hda_nid_t from_nid,
-			    hda_nid_t to_nid, int anchor_nid,
-			    struct nid_path *path);
 struct nid_path *
 snd_hda_add_new_path(struct hda_codec *codec, hda_nid_t from_nid,
 		     hda_nid_t to_nid, int anchor_nid);