V4L/DVB (7288): cx88: fix GPIO for FusionHDTV 7 Gold input selection

Fix GPIO for FusionHDTV 7 Gold tv / s-video / composite input selection.
Fix card textual name to match other FusionHDTV device names.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>