USB: serial: pl2303: TA & TB alternate divider with non-standard baud rates

Use an alternate clock divider algorithm and bit ordering for the TA and
TB versions of the pl2303. It was discovered that these variants do not
produce the correct baud rates with the existing scheme.

see https://lore.kernel.org/r/3aee5708-7961-f464-8c5f-6685d96920d6@IEEE.org



Signed-off-by: Michael G. Katzmann <michaelk@IEEE.org>
Signed-off-by: Johan Hovold <johan@kernel.org>