ALSA: pcmcia: Clean up with new procfs helpers

Simplify the proc fs creation code with new helper functions,
snd_card_ro_proc_new() and snd_card_rw_proc_new().
Just a code refactoring and no functional changes.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pcmcia/pdaudiocf/pdaudiocf_core.c

@@ -148,10 +148,7 @@ static void pdacf_proc_read(struct snd_info_entry * entry,
 
 static void pdacf_proc_init(struct snd_pdacf *chip)
 {
-	struct snd_info_entry *entry;
-
-	if (! snd_card_proc_new(chip->card, "pdaudiocf", &entry))
-		snd_info_set_text_ops(entry, chip, pdacf_proc_read);
+	snd_card_ro_proc_new(chip->card, "pdaudiocf", chip, pdacf_proc_read);
 }
 
 struct snd_pdacf *snd_pdacf_create(struct snd_card *card)