UCM2: Intel: sof-hda-dsp: Cleanup definitions

UCM2: Intel: sof-hda-dsp: Cleanup definitions

This patch cleans up definitions in preparation to add more
controlled processing for audio endpoints.

- The algorithms names write style is aligned to e.g. "Iir" instead
  of "IIR" and "Iir" to avoid mistakes from typos.
- Add prefix PostMixerAnalogPlayback to HDA analog playback
  blob names to separate them from other Speaker endpoints.
- Similarly rename SofControl macro.

The functionality is not changed.

Closes: https://github.com/alsa-project/alsa-ucm-conf/pull/481
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>