V4L/DVB (6701): pvrusb2: Enable support for "GOTVIEW USB2.0 DVD2" hardware

This changeset allows the pvrusb2 driver to operate a new device type
("GOTVIEW USB2.0 DVD2").  Changes amount to defining a new routing
scheme for the device and adding appropriate table entries into
pvrusb2-devattr.c.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>