Fixes for attribute value validation in the topology pre-processor

alsa-project/alsa-utils pull request #138 was opened from ranj063:

This PR fixes 2 issues: 1. Allow variable definitions within included conf files 2. Validating attributes after expanding the variables

Request URL : https://github.com/alsa-project/alsa-utils/pull/138 Patch URL : https://github.com/alsa-project/alsa-utils/pull/138.patch Repository URL: https://github.com/alsa-project/alsa-utils