[media] cx23885: implement tuner_bus parameter for cx23885_board structure

There is two external I2C buses in cx23885 chip.
Currently, analog tuners supported for second I2C bus only
In NetUP Dual DVB-T/C CI RF card tuners connected to first bus
So, in order to support analog tuners sitting on first bus
we need modifications.

Signed-off-by: Igor M. Liplianin <liplianin@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx23885/cx23885.h b/drivers/media/video/cx23885/cx23885.h
index 8b77fea..d8c76b0 100644
--- a/drivers/media/video/cx23885/cx23885.h
+++ b/drivers/media/video/cx23885/cx23885.h
@@ -209,6 +209,7 @@
 	unsigned int		radio_type;
 	unsigned char		tuner_addr;
 	unsigned char		radio_addr;
+	unsigned int		tuner_bus;
 
 	/* Vendors can and do run the PCIe bridge at different
 	 * clock rates, driven physically by crystals on the PCBs.
@@ -364,6 +365,7 @@
 	v4l2_std_id                tvnorm;
 	unsigned int               tuner_type;
 	unsigned char              tuner_addr;
+	unsigned int               tuner_bus;
 	unsigned int               radio_type;
 	unsigned char              radio_addr;
 	unsigned int               has_radio;