ALSA: hda - Move power_save option to hda_intel.c

Move power_save option into hda_intel.c, and make a field in hda_bus,
instead of keeping module parameters in separate files.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index e1077df..4034625 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -585,6 +585,7 @@
 	void *private_data;
 	struct pci_dev *pci;
 	const char *modelname;
+	int *power_save;
 	struct hda_bus_ops ops;
 };
 
@@ -601,6 +602,7 @@
 	void *private_data;
 	struct pci_dev *pci;
 	const char *modelname;
+	int *power_save;
 	struct hda_bus_ops ops;
 
 	/* codec linked list */