[media] tda8290: Allow disabling I2C gate

Allow disabling I2C gate handling by external configuration.
This is required by cards that have all devices on a single I2C bus,
like AverMedia A706.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/tuners/tda8290.h b/drivers/media/tuners/tda8290.h
index e12ecba..b5b51a9 100644
--- a/drivers/media/tuners/tda8290.h
+++ b/drivers/media/tuners/tda8290.h
@@ -26,6 +26,7 @@
 	unsigned int probe_tuner:1;
 #define TDA829X_PROBE_TUNER 0
 #define TDA829X_DONT_PROBE  1
+	unsigned int no_i2c_gate:1;
 };
 
 #if IS_ENABLED(CONFIG_MEDIA_TUNER_TDA8290)