USB: iowarrior: fix up report size handling for some devices

In previous patches that added support for new iowarrior devices, the
handling of the report size was not done correct.

Fix that up and update the copyright date for the driver

Reworked from an original patch written by Christoph Jung.

Fixes: bab5417f ("USB: misc: iowarrior: add support for the 100 device")
Fixes: 5f6f8da2 ("USB: misc: iowarrior: add support for the 28 and 28L devices")
Fixes: 461d8deb

 ("USB: misc: iowarrior: add support for 2 OEMed devices")
Cc: stable <stable@kernel.org>
Reported-by: Christoph Jung <jung@codemercs.com>
Link: https://lore.kernel.org/r/20200726094939.1268978-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>