i2c: meson: Use complete() instead of complete_all()

There is only one waiter for the completion, therefore there
is no need to use complete_all(). Let's make that clear by
using complete() instead of complete_all().

The usage pattern of the completion is:

meson_i2c_xfer_msg()
reinit_completion()
...
/* Start the transfer */
...
wait_for_completion_timeout()

Signed-off-by: Daniel Wagner <[e-mail]>
Signed-off-by: Wolfram Sang <[e-mail]>

drivers/i2c/busses/i2c-meson.c

···
 		meson_i2c_add_token(i2c, TOKEN_STOP);
 	} else {
 		i2c->state = STATE_IDLE;
-		complete_all(&i2c->done);
+		complete(&i2c->done);
 	}
 }
 
···
 		dev_dbg(i2c->dev, "error bit set\n");
 		i2c->error = -ENXIO;
 		i2c->state = STATE_IDLE;
-		complete_all(&i2c->done);
+		complete(&i2c->done);
 		goto out;
 	}
 
···
 		break;
 	case STATE_STOP:
 		i2c->state = STATE_IDLE;
-		complete_all(&i2c->done);
+		complete(&i2c->done);
 		break;
 	case STATE_IDLE:
 		break;