V4L/DVB (10198): uvcvideo: Print the UVC version number in binary-coded decimal.

The UVC specification release number is a binary-coded decimal number, print
it as such.

Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>