ASoC: SOF: Miscellaneous preparatory patches for IPC4

Merge series from Ranjani Sridharan <ranjani.sridharan@linux.intel.com>:

This series includes last few remaining miscellaneous patches to prepare
for the introduction of new IPC version, IPC4, in the SOF driver. The changes
include new IPC ops for topology parsing to set up the volume table, prepare
the widgets for set up and free the routes. The remaining patches introduce
new fields in the existing data structures for use in IPC4 and align the flows
for widget/route set up so that they are common for both IPC3 and IPC4.