DVB: digitv: open nxt6000 i2c_gate for TDED4 tuner handling

dvb-pll normally opens the i2c gate before attempting to communicate with
the pll, but the code for this device is not using dvb-pll.  This should
be cleaned up in the future, but for now, just open the i2c gate at the
appropriate place in order to fix this driver bug.

(cherry picked from commit 2fe22dcd)
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/media/dvb/dvb-usb/digitv.c

@@ -119,6 +119,8 @@ static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe, struct dvb_f
 	struct dvb_usb_adapter *adap = fe->dvb->priv;
 	u8 b[5];
 	dvb_usb_tuner_calc_regs(fe,fep,b, 5);
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
 	return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0);
 }