ALSA: hda/hdmi: set default audio parameters for KAE silent-stream

If the stream-id is zero, the keep-alive (KAE) will only ensure clock is
generated, but no audio samples are sent over display link. This happens
before first real audio stream is played out to a newly connected
receiver.

Reuse the code in silent_stream_enable() to set up stream parameters
to sane defaults values, also when using the newer keep-alive flow.

Fixes: 15175a4 ("ALSA: hda/hdmi: add keep-alive support for ADL-P and DG2")
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Tested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20221209101822.3893675-3-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Author: kv2019i

sound/pci/hda/patch_hdmi.c

@@ -1738,6 +1738,7 @@ static void silent_stream_enable(struct hda_codec *codec,
 
 	switch (spec->silent_stream_type) {
 	case SILENT_STREAM_KAE:
+		silent_stream_enable_i915(codec, per_pin);
 		silent_stream_set_kae(codec, per_pin, true);
 		break;
 	case SILENT_STREAM_I915: