[media] tuner-core: Change config from unsigned int to void *

config looks like a hack that was added to tuner-core to allow some
configuration of TDA8290 tuner (it's not used by any other driver).
But with the new configuration options of tda8290 driver (no_i2c_gate
and std_map), it's no longer sufficient.
Change config to be void * instead, which allows passing tuner-dependent
config struct to drivers.
Also update saa7134 driver to reflect this change (no other driver uses this).

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/include/media/tuner.h b/include/media/tuner.h
index 24eaafe..b46ebb4 100644
--- a/include/media/tuner.h
+++ b/include/media/tuner.h
@@ -192,7 +192,7 @@
 	unsigned short	addr; 	/* I2C address */
 	unsigned int	type;   /* Tuner type */
 	unsigned int	mode_mask;  /* Allowed tuner modes */
-	unsigned int	config; /* configuraion for more complex tuners */
+	void		*config;    /* configuraion for more complex tuners */
 	int (*tuner_callback) (void *dev, int component, int cmd, int arg);
 };