running phoronix with php 8.1 keeps printing warnings about deprecated string

[peterwi]

When running phoronix-test-suite phoromatic.connect phoronix

I get

[8192] strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in phodevi_parser:35

It looks like this function is called in few more places as well

[wallentx]

I also noticed these depending on the command that I would run, and on which platform I'd run it on. I started fixing a few of them on my fork, with the intention of eventually making a PR, but I think the spread of everywhere that this would need to be fixed might be pretty huge, unless the fix is constrained to the phodevi*parser.php files.