drivers: add new audio dai driver interface

The DAI (digital audio interface) API is a high level audio driver
abstraction. It provides support for the standard I2S (SSP), DMIC, HDA
and SDW backends. The API has a config function with bespoke data
argument for device/vendor specific config. There are also optional
timestamping functions to get device specific audio clock time.

Signed-off-by: Jaska Uimonen <jaska.uimonen@linux.intel.com>