dsp: add support for SVA to use afe topology deregister

To handle erroneous scenario when audio afe driver registers
a FFNS topology in non-island mode instead of island mode,
add capability for audio afe driver to deregister previously
created topology before registering a new topology for SVA.

Change-Id: Iff871da998847ea5d3bcee417c780b8acaf70ca3
Signed-off-by: Sanjana B <sanjb@codeaurora.org>
Signed-off-by: Xiaoyu Ye <benyxy@codeaurora.org>