ASoC: wcd9335: send SSR notification to soundwire

When ADSP Sub-system Restart (SSR) is triggered, it
is necessary to send corresponding device down
notification to Soundwire master driver. Without this,
once device comes back from SSR, audio playback on
speaker will not work. This change sends device down
notification from wcd9335 codec to soundwire master
during SSR.

Change-Id: Iae4776bb397303b736f0d35d5ab3aef4dd25178f
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>