Something similar to this can be done using User-Defined Overrides with the device's full MAC address instead of the last six characters. See the below Knowledge Base article for full instructions on using User-Defined Overrides.
Macros can be used to automatically insert the device's MAC address into the configuration file before it is sent to the device. In the User-Defined Overrides section you would enter:
SSID1=CompanyName WiFi %{ESN}
"%{ESN}" will be replaced with the device's full MAC address. The above link gives examples including all SSIDs for both the 2.4 and 5 GHz radios. As a side note, %{MSN} can be used for inserting a device's serial number.
This can optionally be combined with replacement variables to further make the value unique per device but it doesn't sound like that's what you're looking for. That is the focus of the Knowledge Base article, but hard coded values can be used instead of ${} values.