V4L/DVB (13334): stv6110: add configurable gain

It has positive effect for NetUP Dual DVB-S2 CI card.

Signed-off-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx23885/cx23885-dvb.c b/drivers/media/video/cx23885/cx23885-dvb.c
index f4f046c..0180b75 100644
--- a/drivers/media/video/cx23885/cx23885-dvb.c
+++ b/drivers/media/video/cx23885/cx23885-dvb.c
@@ -414,12 +414,14 @@
 	.i2c_address = 0x60,
 	.mclk = 16000000,
 	.clk_div = 1,
+	.gain = 8, /* +16 dB  - maximum gain */
 };
 
 static struct stv6110_config netup_stv6110_tunerconfig_b = {
 	.i2c_address = 0x63,
 	.mclk = 16000000,
 	.clk_div = 1,
+	.gain = 8, /* +16 dB  - maximum gain */
 };
 
 static int tbs_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)