[ALSA] ice1724 - Functioning support for Prodigy 192

Fixes:
--------
* correct card specific ice1724 initialization
* working IEC958 output of the card
* renamed capture controls
New features:
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* analog input switch (line-in/mic)
* optional ak4114 based MI/ODI/O card detection & support: IEC958 input,
  digital input switch (toslink/coax)
Unresolved issues
-----------------------
* Analog and digital input enums are listed on playback panel of alsamixer,
  I do not know how to push them onto the capture one.

Signed-off-by: Pavel Hofman <dustin@seznam.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>