ALSA: PCI: Replace CONFIG_PM with CONFIG_PM_SLEEP

Otherwise we may get compile warnings due to unused functions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ice1712/ice1712.h b/sound/pci/ice1712/ice1712.h
index 0da778a6..d0e7d87 100644
--- a/sound/pci/ice1712/ice1712.h
+++ b/sound/pci/ice1712/ice1712.h
@@ -384,7 +384,7 @@
 	char **ext_clock_names;
 	int ext_clock_count;
 	void (*pro_open)(struct snd_ice1712 *, struct snd_pcm_substream *);
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 	int (*pm_suspend)(struct snd_ice1712 *);
 	int (*pm_resume)(struct snd_ice1712 *);
 	unsigned int pm_suspend_enabled:1;