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/maestro3.c b/sound/pci/maestro3.c
index c85d1ff..eb3cd3a 100644
--- a/sound/pci/maestro3.c
+++ b/sound/pci/maestro3.c
@@ -789,7 +789,7 @@
 
 	unsigned int in_suspend;
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 	u16 *suspend_mem;
 #endif
 
@@ -2368,7 +2368,7 @@
 		outw(0, chip->iobase + HOST_INT_CTRL); /* disable ints */
 	}
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 	vfree(chip->suspend_mem);
 #endif
 
@@ -2390,7 +2390,7 @@
 /*
  * APM support
  */
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int m3_suspend(struct device *dev)
 {
 	struct pci_dev *pci = to_pci_dev(dev);
@@ -2485,7 +2485,7 @@
 #define M3_PM_OPS	&m3_pm
 #else
 #define M3_PM_OPS	NULL
-#endif /* CONFIG_PM */
+#endif /* CONFIG_PM_SLEEP */
 
 #ifdef CONFIG_SND_MAESTRO3_INPUT
 static int __devinit snd_m3_input_register(struct snd_m3 *chip)
@@ -2656,7 +2656,7 @@
 	}
 	chip->irq = pci->irq;
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 	chip->suspend_mem = vmalloc(sizeof(u16) * (REV_B_CODE_MEMORY_LENGTH + REV_B_DATA_MEMORY_LENGTH));
 	if (chip->suspend_mem == NULL)
 		snd_printk(KERN_WARNING "can't allocate apm buffer\n");