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/atiixp_modem.c b/sound/pci/atiixp_modem.c
index 79e204e..6fc03d9 100644
--- a/sound/pci/atiixp_modem.c
+++ b/sound/pci/atiixp_modem.c
@@ -511,7 +511,7 @@
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int snd_atiixp_aclink_down(struct atiixp_modem *chip)
 {
 	// if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
@@ -1113,7 +1113,7 @@
 }
 
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 /*
  * power management
  */
@@ -1169,7 +1169,7 @@
 #define SND_ATIIXP_PM_OPS	&snd_atiixp_pm
 #else
 #define SND_ATIIXP_PM_OPS	NULL
-#endif /* CONFIG_PM */
+#endif /* CONFIG_PM_SLEEP */
 
 #ifdef CONFIG_PROC_FS
 /*