ALSA: hda/hdmi - Clean up Intel platform-specific fixup checks

Introduce a new flag in hdmi_spec to indicate the Intel platform-
specific fixups so that we can get rid of the lengthy codec ID
checks.  The flag is set in intel_hsw_common_init() commonly.

Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20191111190937.19186-1-tiwai@suse.de


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