FROMLIST: ASoC: SOF: Add firmware loader support

The firmware loader exports APIs that can be called by core to load and
process multiple different file formats.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
(cherry picked from commit e690b8b44d8accad103f7512adbd1baa3d573202)
Link: https://github.com/thesofproject/linux/commit/e690b8b44d8accad103f7512adbd1baa3d573202


Signed-off-by: Samaga Prasanna Krishna <samaga.krishna@intel.corp-partner.google.com>

BUG=b:110025789
TEST=Test Audio use cases after full SOF series patches are applied.

Change-Id: I49ee7e45eab791ab6a7961a58c890094840d24b4
Reviewed-on: https://chromium-review.googlesource.com/1120593


Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Curtis Malainey <cujomalainey@chromium.org>
Reviewed-by: Curtis Malainey <cujomalainey@chromium.org>