Added support for BT/FM SoundWire slave driver.
The driver registers as a codec driver with ALSA.
Slave port configuration is sent to master driver.
Master driver takes care of programming master and
slave registers at once when BT audio usecase is
started/stopped.
Change-Id: I3a4de9872323c470f2ec73218601be94a768d726
Signed-off-by: Satish Kumar Kodishala <quic_skodisha@quicinc.com>
