ALSA: hda - Enable widget power saving for Realtek codecs

Recent Realtek codecs support the finer power state control on each
widget.  Let's enable the new feature.

Tested-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -5413,6 +5413,7 @@ static int patch_alc269(struct hda_codec *codec)
 
 	spec = codec->spec;
 	spec->gen.shared_mic_vref_pin = 0x18;
+	codec->power_save_node = 1;
 
 	snd_hda_pick_fixup(codec, alc269_fixup_models,
 		       alc269_fixup_tbl, alc269_fixups);