TASCAM FireWire series devices have a quirk where they fail to respond to asynchronous transactions at S400 speed. This quirk was supported by commit d52bb3daad3f ("firewire: core: handle device quirk of TASCAM FW-1884/FW-1804/FW-1082"). Add a KUnit test to verify that the configuration ROM parser detects the quirk correctly. The configuration ROM content is retrieved from the author's collection. Link: https://lore.kernel.org/r/20260901134534.2386577-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>