PCI drivers,ICE1712 driver,ICE1724 driver
- improved the description of ice1724 driver on Kconfig.
- better support of VT1720 with snd-ice1724 driver.
- check PCI subsystem IDs when no EEPROM is available (ice1724 only)
- change the driver name string if given in the board list.
- merged prodigy 7.1 support into aureon.c.  they are almost identical.
- allow to use PDMA4 and RMDA1 for non-SPDIF purpose if specified (ice1724 only).