FROMLIST: ASoC: SOF: Add PCM operations support

Add support for exposing PCMs to userspace. PCMs are defined by topology
and the operations in this patch map to SOF IPC calls.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
(cherry picked from commit a9538a50ef69d5394b48a40a2d6669487f737b9a)
Link:https://github.com/thesofproject/linux/commit/a9538a50ef69d5394b48a40a2d6669487f737b9a


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: I1b8194578b5cac355bcaa6d29418cf24cb90bdd7
Reviewed-on: https://chromium-review.googlesource.com/1120589


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>