[ALSA] cs46xx - Fix PM resume

Fixed PM resume of cs46xx devices.  It now restores properly the DSP
image and kick-off the DSP.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/include/sound/cs46xx.h b/include/sound/cs46xx.h
index 685928e..353910c 100644
--- a/include/sound/cs46xx.h
+++ b/include/sound/cs46xx.h
@@ -1723,6 +1723,10 @@
 	struct snd_cs46xx_pcm *playback_pcm;
 	unsigned int play_ctl;
 #endif
+
+#ifdef CONFIG_PM
+	u32 *saved_regs;
+#endif
 };
 
 int snd_cs46xx_create(struct snd_card *card,