ALSA: hda - Enable widget power saving for Cirrus codecs

Cirrus codecs have also fine power controls on each widget, thus it
gets benefit from the recent widget power-saving feature.  As we
haven't seen any obvious regressions with tests on some MacBooks,
let's try to enable it.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_cirrus.c

@@ -570,6 +570,7 @@ static struct cs_spec *cs_alloc_spec(struct hda_codec *codec, int vendor_nid)
 		return NULL;
 	codec->spec = spec;
 	spec->vendor_nid = vendor_nid;
+	codec->power_save_node = 1;
 	snd_hda_gen_spec_init(&spec->gen);
 
 	return spec;