V4L/DVB: s2250: Fix write_reg i2c address

The kernel i2c model uses right-aligned 7-bit i2c addresses, but the
2250 firmware uses an 8-bit address in the usb vendor request.  A
previous patch by Jean Delvare shifted the i2c addresses 1 bit to the
right, and this patch fixes the write_reg function to shift it back
before sending the vendor request.

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Signed-off-by: Pete Eberlein <pete@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/go7007/s2250-board.c

@@ -159,7 +159,7 @@ static int write_reg(struct i2c_client *client, u8 reg, u8 value)
 	struct go7007 *go = i2c_get_adapdata(client->adapter);
 	struct go7007_usb *usb;
 	int rc;
-	int dev_addr = client->addr;
+	int dev_addr = client->addr << 1;  /* firmware wants 8-bit address */
 	u8 *buf;
 
 	if (go == NULL)