ALSA: hda: move parts of NHLT code to new module

ALSA: hda: move parts of NHLT code to new module

BugLink: https://bugs.launchpad.net/bugs/1837828
Move parts of the code outside of the Skylake driver to help detect
the presence of DMICs (which are not supported by the HDaudio legacy
driver).

No functionality change (except for the removal of useless OR
operations), only indentation and checkpatch fixes, making sure
that the code compiles without ACPI and fixing an ACPI leak

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
(cherry picked from commit 303681f4356d322232dd5f6d9eb4bc62666064c5)
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Acked-by: Sultan Alsawaf <sultan.alsawaf@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>