Follow the style:

<vendor-name>-<driver-hint>-driver.ini

Since all Driver Feature Configuration INI files get installed into a single directory (refer CAPS Printer Driver Configuration Directory) it is important to avoid file name clashes.

Let the <driver-hint> part be as unique as possible to be used as a shared Driver Feature INI file.

Following the example in Device Description INI File Naming Conventions this could be acme-printer800x-driver.ini to show, it is shared by all Acme printer800 model variants (if possible).