ASoC: hdac_hdmi: report codec link up/down status to bus

Report codec power status to the HDA codec bus from runtime pm
suspend and resume callbacks. This is required to implement
runtime idle logic that relies on 'codec_powered' field of hdac_bus
to be maintained for all codecs.
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20190702132428.13129-2-kai.vehmanen@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/hdac_hdmi.c

@@ -2088,6 +2088,7 @@ static int hdac_hdmi_runtime_suspend(struct device *dev)
 		return -EIO;
 	}
 
+	snd_hdac_codec_link_down(hdev);
 	snd_hdac_ext_bus_link_put(bus, hlink);
 
 	snd_hdac_display_power(bus, hdev->addr, false);
@@ -2114,6 +2115,7 @@ static int hdac_hdmi_runtime_resume(struct device *dev)
 	}
 
 	snd_hdac_ext_bus_link_get(bus, hlink);
+	snd_hdac_codec_link_up(hdev);
 
 	snd_hdac_display_power(bus, hdev->addr, true);