What we have right now:
- All page 1 registers added as a u16 array of coefficients with routines
to read/write the coefficients (aic3x_read_coeff_cache and
aic3x_write_coeff respectively)
- Added syncing coeff_cache with hardware after a suspend/resume cycle
- Added ALSA controls for the 3-D depth simulation filter
What's missing:
A lot