Nhlt plugin and simple plugin interface

alsa-project/alsa-utils pull request #129 was edited from juimonen:

Initial something... I need to figure out:

- where to specify which plugins to load/run (nhlt now hard coded) - where to install the plugins - how to get the to-be-loaded plugin names and where - is the "hidden-visibility" gcc flag ok to hide other than .so entrypoint

Request URL : https://github.com/alsa-project/alsa-utils/pull/129 Patch URL : https://github.com/alsa-project/alsa-utils/pull/129.patch Repository URL: https://github.com/alsa-project/alsa-utils