media: dvbsky: MyGica T230* receivers also do DVB-C and DVB-T

MyGica T230* receivers also do DVB-C and DVB-T: change their names.

Signed-off-by: Jan Pieter van Woerkom <jp@jpvw.nl>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>