[ALSA] Remove unneeded read/write_size fields in proc text ops

Remove unneeded read/write_size fields in proc text ops.
snd_info_set_text_ops() is fixed, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/via82xx_modem.c b/sound/pci/via82xx_modem.c
index ef97e50..577a2b0 100644
--- a/sound/pci/via82xx_modem.c
+++ b/sound/pci/via82xx_modem.c
@@ -929,7 +929,7 @@
 	struct snd_info_entry *entry;
 
 	if (! snd_card_proc_new(chip->card, "via82xx", &entry))
-		snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
+		snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
 }
 
 /*