p14s, t14s: fix linux firmware version check

[dadada]

Description of changes

Things done

• Tested the changes in your own NixOS Configuration
• Tested the changes end-to-end by using your fork of nixos-hardware and
  importing it via <nixos-hardware> or Flake input

[samueldr]

@dadada I haven't really looked at the problem more than in this comment, but would it be okay to just remove the check?

In other words, is the earliest version available since 23.05 was released already passing the check? If so, we probably should drop it, as I don't think supporting EOL'd releases is a goal here.

[dadada]

@dadada I haven't really looked at the problem more than in this comment, but would it be okay to just remove the check?

In other words, is the earliest version available since 23.05 was released already passing the check? If so, we probably should drop it, as I don't think supporting EOL'd releases is a goal here.

I suppose removing it is alright. If people use EOL NixOS, they can pin an old version of nixos-hardware.