ALSA: cs5535audio: suspend/resume callbacks are only defined with CONFIG_PM

snd_cs5535audio_suspend and snd_cs5535audio_resume are only defined when
CONFIG_PM is set; make that clear in the header file.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/cs5535audio/cs5535audio.h

@@ -94,8 +94,11 @@ struct cs5535audio {
 	struct cs5535audio_dma dmas[NUM_CS5535AUDIO_DMAS];
 };
 
+#ifdef CONFIG_PM
 int snd_cs5535audio_suspend(struct pci_dev *pci, pm_message_t state);
 int snd_cs5535audio_resume(struct pci_dev *pci);
+#endif
+
 int __devinit snd_cs5535audio_pcm(struct cs5535audio *cs5535audio);
 
 #endif /* __SOUND_CS5535AUDIO_H */