Add Leadtek WinFast DTV2000DS Plus device based on Realtek RTL2832U.

I have not tested the remote, but it is the Y04G0051 model.
Signed-off-by: NChristian Dale <kernel@techmunk.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>