ALSA: hda - Apply a proper chmap for built-in 2.1 speakers

When 2.1 speakers are detected, use the corresponding channel map
instead of the standard map with front+rear surrounds.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index 794b0da..f99cbf9 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -344,6 +344,9 @@
 	info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = spec->dac_nid[0];
 	info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max =
 		spec->multiout.max_channels;
+	if (spec->speaker_2_1)
+		info->stream[SNDRV_PCM_STREAM_PLAYBACK].chmap =
+			snd_pcm_2_1_chmaps;
 	info->stream[SNDRV_PCM_STREAM_CAPTURE] = cs_pcm_analog_capture;
 	info->stream[SNDRV_PCM_STREAM_CAPTURE].nid =
 		spec->adc_nid[spec->cur_input];