Add Dusseldorf DVB-T channels

Add Dusseldorf DVB-T channels

While travelling for LinuxCon EU, I was able to do scans at the
Airport and at the hotel. Those are the channels I was able to
find while there.

I scanned for DVB-T2 channels too, but was unable to find any.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>