Modules: AC97 Codec

Remove xxx_t typedefs from the AC97 codec support.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

AC97 Codec
Added (minimal) support of VT1617A codec with SPDIF.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

AC97 Codec
- Added CM9780 patch
- Fix the SPDIF support on CM9761/CM9780
- Allow the generic enum callback to pass any number (not power of 2)
  as the value mask
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!