slim_msm: Handle ADSP SSR gracefully for apps-owned data channels

Usually the data channels are owned by codec, or by ADSP itself. If
apps itself is involved in data-transfer on the channels, make sure
the BAM pipes, or the port-registers in question are not accessed
while ADSP is restarting.

Change-Id: I9476c7389dbf89d902f0ef6572f3f755f0575f7b
Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>