ALSA: ac97: Fix ifdef CONFIG_PROC_FS

Replaced with the new CONFIG_SND_PROC_FS.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ac97/Makefile b/sound/pci/ac97/Makefile
index 41fa322..5261753 100644
--- a/sound/pci/ac97/Makefile
+++ b/sound/pci/ac97/Makefile
@@ -4,7 +4,7 @@
 #
 
 snd-ac97-codec-y := ac97_codec.o ac97_pcm.o
-snd-ac97-codec-$(CONFIG_PROC_FS) += ac97_proc.o
+snd-ac97-codec-$(CONFIG_SND_PROC_FS) += ac97_proc.o
 
 # Toplevel Module Dependency
 obj-$(CONFIG_SND_AC97_CODEC) += snd-ac97-codec.o