[media] it913x: re-implement sleep

Re-implement sleep. Based USB sniffs taken from the latest Hauppauge
windows driver version 07/10/2014, 14.6.23.32191.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/usb/dvb-usb-v2/af9035.c

@@ -1324,6 +1324,13 @@ static int af9035_tuner_attach(struct dvb_usb_adapter *adap)
 			.chip_ver = 1,
 		};
 
+		if (state->dual_mode) {
+			if (adap->id == 0)
+				it913x_config.role = IT913X_ROLE_DUAL_MASTER;
+			else
+				it913x_config.role = IT913X_ROLE_DUAL_SLAVE;
+		}
+
 		ret = af9035_add_i2c_dev(d, "it913x",
 				state->af9033_config[adap->id].i2c_addr,
 				&it913x_config);
@@ -1342,6 +1349,13 @@ static int af9035_tuner_attach(struct dvb_usb_adapter *adap)
 			.chip_ver = 2,
 		};
 
+		if (state->dual_mode) {
+			if (adap->id == 0)
+				it913x_config.role = IT913X_ROLE_DUAL_MASTER;
+			else
+				it913x_config.role = IT913X_ROLE_DUAL_SLAVE;
+		}
+
 		ret = af9035_add_i2c_dev(d, "it913x",
 				state->af9033_config[adap->id].i2c_addr,
 				&it913x_config);