UPSTREAM: ASoC: Intel: sst: Add sst_realloc_stream() function

Move the struct snd_sst_alloc_mrfld alloc parameters from the stack
into struct stream_info and add a new sst_realloc_stream() function which
can re-alloc a stream with the same parameters as before.

This is a preparation patch for fixing suspend/resume issues with some
SST / DSP firmware versions.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
(cherry picked from commit 473858ca)
Signed-off-by: Samaga Prasanna Krishna <samaga.krishna@intel.corp-partner.google.com>

BUG=b:110025789
TEST=Test Audio use cases with full SOF 0.6 rebase release series applied.

Change-Id: I19a73cfb1683be5e6a2f9322f781ab421cbb8a03
Reviewed-on: https://chromium-review.googlesource.com/1353425


Commit-Ready: Curtis Malainey <cujomalainey@chromium.org>
Tested-by: Curtis Malainey <cujomalainey@chromium.org>
Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>