ALSA: hda - Bind with HDMI codec parser automatically

If a codec contains only the digital outputs, it's very likely a
HDMI/DP codec, which isn't supported by the generic parser but via
HDMI codec parser code.  Detect such a case and bind with the proper
parser object if available.

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