soc: soundwire: use pm runtime function to tear down soundwire master

Use pm_runtime_put_sync_suspend to tear down soundwire master.
It makes sure the process is synced with the autosuspend call
flow.

Change-Id: Ib4feccd905bcbf046e58bd5eaffde40ee391feda
Signed-off-by: Xiaojun Sang <xsang@codeaurora.org>