V4L/DVB (7059): cx88: Ensure the tuner is reset correctly

Previous patches assume the tuner was on a different gpio. This patch
corrects this.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Chaogui Zhang <czhang1974@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>