V4L/DVB (4362): Cx88: Shenzhen Tungsten Ages Tech TE-DTV-250 / Swann PCI TV Tuner card support

Add support for Shenzhen Tungsten Ages Tech TE-DTV-250 OEM for
Swann PCI TV Tuner Card

Signed-off-by: David Bussenschutt <buzz@oska.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>