[ALSA] Optimize for config without PROC_FS

Modules: HWDEP Midlevel,ALSA Core,PCM Midlevel,Timer Midlevel

Optimize the code when compiled without CONFIG_PROC_FS.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/sound.c

@@ -320,6 +320,7 @@ int snd_unregister_device(int type, struct snd_card *card, int dev)
 	return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 /*
  *  INFO PART
  */
@@ -396,6 +397,7 @@ int __exit snd_minor_info_done(void)
 		snd_info_unregister(snd_minor_info_entry);
 	return 0;
 }
+#endif /* CONFIG_PROC_FS */
 
 /*
  *  INIT PART