asoc: swr: master controller fixes for tanggu

Add locking for soundwire fifo operation as same
function call can be used at a time by a different thread
like mbhc, and fix register definitions in header.
Add soundwire slave interrupt clear registers as part of
slave interrupt event in master interrupt handler.

Change-Id: I94d9b7ac09192dbf8aa3248d35956b380430ee0b
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>