audio-kernel: Pull in latest changes from 4.0 branch in atoll

Pull in the latest code change delta from 4.0 branch into
3.0 for atoll target.

Change-Id: I37e9cb45adaf402ab0b8b02688ea310d8c3307c2
Signed-off-by: Aditya Bavanari <abavanar@codeaurora.org>