topology: Add option to pass include path for conditional includes

[GitHub pull_request - opened]

alsa-project/alsa-utils pull request #125 was opened from ranj063:

The include path passed with -I option will override the relative
include path based on the source file.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>

Request URL   : https://github.com/alsa-project/alsa-utils/pull/125
Patch URL     : https://github.com/alsa-project/alsa-utils/pull/125.patch
Repository URL: https://github.com/alsa-project/alsa-utils