Drop version number bounds, use regexps instead. Not entirely ideal, but as
vendors are free to put arbitrary stuff into the driver version string (part
of which might be numbers, part free text, part significant, part just
informative), just comparing against lower and upper bounds with strverscmp()
was not ideal either.

Change-Id: Ic4ef4d8e15f79f1c96e6e03f6c01e62ae92dc2fc