ALSA: hda - Clean up CONFIG_SND_HDA_POWER_SAVE

CONFIG_SND_HDA_POWER_SAVE is no longer an experimental feature and its
behavior can be well controlled via the default value and module
parameter.  Let's just replace it with the standard CONFIG_PM.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 431bf86..b81d3d0 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -70,7 +70,7 @@
 
 	struct list_head nid_list;	/* list of widgets */
 
-#ifdef CONFIG_SND_HDA_POWER_SAVE
+#ifdef CONFIG_PM
 #define MAX_LOOPBACK_AMPS	7
 	struct hda_loopback_check loopback;
 	int num_loopbacks;
@@ -654,7 +654,7 @@
 	return 0;
 }
 
-#ifdef CONFIG_SND_HDA_POWER_SAVE
+#ifdef CONFIG_PM
 static void add_input_loopback(struct hda_codec *codec, hda_nid_t nid,
 			       int dir, int idx)
 {
@@ -1028,7 +1028,7 @@
 	return 0;
 }
 
-#ifdef CONFIG_SND_HDA_POWER_SAVE
+#ifdef CONFIG_PM
 static int generic_check_power_status(struct hda_codec *codec, hda_nid_t nid)
 {
 	struct hda_gspec *spec = codec->spec;
@@ -1043,7 +1043,7 @@
 	.build_controls = build_generic_controls,
 	.build_pcms = build_generic_pcms,
 	.free = snd_hda_generic_free,
-#ifdef CONFIG_SND_HDA_POWER_SAVE
+#ifdef CONFIG_PM
 	.check_power_status = generic_check_power_status,
 #endif
 };