V4L/DVB (3344): Enable microtune for Pinnacle 300i boards


- The Pinnacle 300i (like the PCTV Stereo) needs tda9887 port2 set to 1 for
the tuner to work

Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>