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>

sound/pci/ctxfi/ctmixer.h

@@ -56,7 +56,7 @@ struct ct_mixer {
 			      enum MIXER_PORT_T type, struct rsc *rsc);
 	int (*set_input_right)(struct ct_mixer *mixer,
 			       enum MIXER_PORT_T type, struct rsc *rsc);
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 	int (*resume)(struct ct_mixer *mixer);
 #endif
 };