iop: genconfig: Use new version format
Use a new version format:
- More strict regex for filtering tags for determining version which prevents OpenWrt and hopefully other tags from becoming the IOWRT version
- version follows standard git-describe format with -dirty
- customerconfigs are appended to the version
Example-versions:
- 7.1.0BETA1
- 7.1.0BETA1-29-g1292f9102e-dirty
- 7.1.0BETA1-29-g1292f9102e-secureboot
- 7.1.0BETA1-29-g1292f9102e-securebooteval
Edited by Andreas Gnau