MFC r338038: Extending the delay cycles to give the codec more time to pump ADC data across the AC-link.
Without this patch, some CS4614 cards will need users to reload the driver manually or
the hardware won't be initialised properly. Something like:
- kldload snd_csa
- kldunload snd_csa
- kldload snd_csa
Tested with: Terratec SiXPack 5.1+