ASoC: SOF: Intel: mtl/lnl: Improve firmware boot state

Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:

This series improves the firmware/boot state handling which will allow
failed IMR boot recovery and human readable boot failure decoding.

Additionally a new debugfs file is added to force a purge/clean boot
of the DSP for developers.

diff --cc sound/soc/sof/intel/hda.h
Simple merge

diff --cc sound/soc/sof/intel/lnl.c
Simple merge

diff --cc sound/soc/sof/intel/mtl.c
Simple merge

diff --cc sound/soc/sof/intel/mtl.h
Simple merge