[ALSA] Optimize for config without PROC_FS (pci drivers)

Optimize the code when compiled without CONFIG_PROC_FS for some pci drivers.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
index 466170e..47e26aa 100644
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -1066,6 +1066,7 @@
 }
 #endif /* CONFIG_PM */
 
+#ifdef CONFIG_PROC_FS
 static void snd_intel8x0m_proc_read(struct snd_info_entry * entry,
 				   struct snd_info_buffer *buffer)
 {
@@ -1093,6 +1094,10 @@
 	if (! snd_card_proc_new(chip->card, "intel8x0m", &entry))
 		snd_info_set_text_ops(entry, chip, 1024, snd_intel8x0m_proc_read);
 }
+#else /* !CONFIG_PROC_FS */
+#define snd_intel8x0m_proc_init(chip)
+#endif /* CONFIG_PROC_FS */
+
 
 static int snd_intel8x0_dev_free(struct snd_device *device)
 {