Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:
The probes (the ability of probing the audio data from firmware processing
points or to receive stream of debug/trace information) is supported by IPC4
as well, but due to the differences between the two IPC version the low level
setup and information we need for probing is different.
This series will extend the existing probes support for IPC3 with IPC4 'backend'