V4L/DVB (5386): Add some missing Hauppauge and Belkin devices to the driver

-Add some missing Hauppauge and Belkin devices to the driver.
-Fixed up some device descriptions.

Signed-off-by: Dwaine P. Garden <DwaineGarden@rogers.com>
Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>