soc: swr-mstr: Add wakeup irq support from afe using event notifier

Register and handle swr wakeup irq from afe, using aud event
notifier codec interrupts during clock stop mode.

Change-Id: I76d250adcaa8af4a413f6274482beb5a3469601d
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>