[media] fc2580: cleanups and variable renames

Rename driver state from priv to dev.
Remove legacy i2c-gate control.
Use I2C client for proper dev_() logging.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/tuners/fc2580_priv.h

@@ -127,7 +127,7 @@ static const struct fc2580_freq_regs fc2580_freq_regs_lut[] = {
 		0x0a, 0xa0, 0x50, 0x14},
 };
 
-struct fc2580_priv {
+struct fc2580_dev {
 	u32 clk;
 	struct i2c_client *client;
 	struct i2c_adapter *i2c;