asoc: bolero: Increase timeout for session down during ssr

Sometimes observed that session is taken more time to teardown
after ssr. Increase timeout to allow more time for session
to be tear down.

Change-Id: I3f1b4d8f583ad5b9c8f5e1b90af9c576ae6bd2b2
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>