[ALSA] Optimize for config without PROC_FS (seq and oss parts)

Modules: ALSA<-OSS emulation,ALSA sequencer,ALSA<-OSS sequencer

Optimize the code when compiled without CONFIG_PROC_FS (in seq and oss
emulation parts).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c
index 2d7a420..f08e65a 100644
--- a/sound/core/oss/mixer_oss.c
+++ b/sound/core/oss/mixer_oss.c
@@ -1053,6 +1053,7 @@
 	return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 /*
  */
 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
@@ -1200,6 +1201,10 @@
 		mixer->proc_entry = NULL;
 	}
 }
+#else /* !CONFIG_PROC_FS */
+#define snd_mixer_oss_proc_init(mix)
+#define snd_mixer_oss_proc_done(mix)
+#endif /* CONFIG_PROC_FS */
 
 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
 {