* Initial implementation of the Yamaha YMF-71x (OPL3-SA2/3) audio controllers
* Give the Intel AN430TX its onboard YMF-715
* Forgotten change to snd_sb_dsp.c
* Disable logging, code cleanup
* Use 32K default SB DSP DMA buffer globally and remove the Yamaha subtype
* Hook up master volume control to the OPL3 as well
* Use custom CD audio filter to apply master volume
* Initial implementation of the OPL3-SA3 bass/treble controls
* Improve CD audio volume filter
* Implement the power management registers
* Move master volume recalc to its own function and update on register write
* Correct YMF-719 PnP ROM filename
* Cleanup
