ALSA: HDMI - Setup channel mapping for non_pcm audio

For HBR stream test, use straight channel mapping way.
when switched back to "speaker-test -c8", even the audio
infoframe is up-to-date, there should be correct channel mapping setup.
Signed-off-by: NWang Xingchao <xingchao.wang@intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_hdmi.c

@@ -780,6 +780,11 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, int pin_idx,
 		hdmi_fill_audio_infoframe(codec, pin_nid,
 					    ai.bytes, sizeof(ai));
 		hdmi_start_infoframe_trans(codec, pin_nid);
+	} else {
+		/* For non-pcm audio switch, setup new channel mapping
+		 * accordingly */
+		if (per_cvt->non_pcm != non_pcm)
+			hdmi_setup_channel_mapping(codec, pin_nid, cvt_nid, non_pcm, ca);
 	}
 
 	per_cvt->non_pcm = non_pcm;