sound updates #2 for 4.7-rc1

This is the second update round for 4.7-rc1.  Most of changes are
about the pending ASoC updates and fixes, including a few new
drivers.  Below are some highlights:

ASoC:
- New drivers for MAX98371 and TAS5720
- SPI support for TLV320AIC32x4, along with the module split
- TDM support for STI Uniperf IPs
- Remaining topology API fixes / updates

HDA:
- A couple of Dell quirks and new Realtek codec support
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