ALSA: hda: Move controller drivers into sound/hda/controllers directory

Now HD-audio controller drivers are moved into sound/hda/controllers
directory as a part of HD-audio code reorganization.  Most of drivers
are independent from PCI bus, hence it makes more sense to put under
sound/hda.

The hda_ prefix is dropped from most of files at moving, as it's
more or less superfluous.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250709160434.1859-6-tiwai@suse.de