This adds the missing firmware for usbduxsigma. The
driver is already part of the kernel 3.2. The firware
was submitted with the initial driver submission but
probably got lost when the kernel.org was attacked.
Added usbduxsigma to the list of files in WHENCE
Signed-off-by: Bernd Porr <firstname.lastname@example.org>
Signed-off-by: Ben Hutchings <email@example.com>