firewire: ohci: use static function to handle endian issue on PowerPC platform

It is preferable to use static function instead of functional macro in
some points. It checks type of argument, but would be optimized to
embedded code instead of function calls.

This commit obsoletes the functional macro with the static function.
Additionally this commit refactors quirk detection to ease the later work.

Link: https://lore.kernel.org/r/20240702222034.1378764-3-o-takashi@sakamocchi.jp


Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>