ASoC: qdsp6: audioreach: update dapm kcontrol private data

Update kcontrol private date to include more information like graph id
and module instance id which its connected to. Also maintain this virtual
dapm mixer widget in a list so that we could lookup while FE and BE connection
are added.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20221027102710.21407-4-srinivas.kandagatla@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>