asoc: codecs: cancel all delayed work during SSR/PDR

Cancel any pending delayed work in device down call
to ensure no work is scheduled during or after a
SSR/PDR sequence.

Change-Id: I4cc89cb1a9d8be732c978044d4eea3cf6644ec30
Signed-off-by: Karthikeyan Mani <kmani@codeaurora.org>
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>