i2c: at91: don't account as iowait

iowait is for blkio [1]. I2C shouldn't use it.

[1] https://lkml.org/lkml/2014/11/3/317Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Cc: stable@kernel.org

(cherry picked from commit 11cfbfb0)
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

drivers/i2c/busses/i2c-at91.c

@@ -435,7 +435,7 @@ static int at91_do_twi_transfer(struct at91_twi_dev *dev)
 		}
 	}
 
-	ret = wait_for_completion_io_timeout(&dev->cmd_complete,
+	ret = wait_for_completion_timeout(&dev->cmd_complete,
 					     dev->adapter.timeout);
 	if (ret == 0) {
 		dev_err(dev->dev, "controller timed out\n");