ALSA: x86: Don't set PCM state to DISCONNECTED

Theoretically setting the state to SNDRV_PCM_STATE_DISCONNECTED is
correct.  But, unfortunately, PA gets confused by this action, and it
won't re-probe the device after HDMI/DP is re-plugged.  (It reprobes
only when the card itself is recreated.)

As a workaround, set SNDRV_PCM_STATE_SETUP instead.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/x86/intel_hdmi_audio_if.c

@@ -464,7 +464,7 @@ int had_process_hot_unplug(struct snd_intelhad *intelhaddata)
 		spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irqs);
 		pr_debug("%s: unlock -> sending pcm_stop -> lock\n", __func__);
 		snd_pcm_stop(intelhaddata->stream_info.had_substream,
-				SNDRV_PCM_STATE_DISCONNECTED);
+				SNDRV_PCM_STATE_SETUP);
 		spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irqs);
 	}