sound fixes for 4.5

It's always an ambivalent feeling to send a large pull request at the
late stage like this, especially when most of patches came from me.
In anyway, this is a collection of lots of small fixes that slipped
from the previous pull request.

All fixes are about ASoC, and the majority of changes are corrections
of the wrong access types in ALSA ctl enum items.  They are mostly
harmless on 32bit architectures, but actually buggy on 64bit.  So we
addressed all these now in a shot.  The rest are various small ASoC
driver fixes.

Among them, only two changes have been done to ASoC core, and both of
them are trivial.  The rest are all device-specific.  So overall, they
should be safe to apply.
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