ALSA: hda - Store PCM parameters properly in HDMI open callback

In hdmi_pcm_open(), the evaluated PCM hw parameters are stored in
hinfo, but these aren't properly set back to the current runtime
record since these have been set beforehand in azx_pcm_open().
This patch fixes the behavior.

Signed-off-by: Takashi Iwai <tiwai@suse.de>