sensors: use U16 data format for the COL-CAL mode

Experimentation suggests that the values are only 16bit integers.
The maximum of 65535 futher hints towards that this is a uint16_t.

Signed-off-by: Jakub Vanek <linuxtardis@gmail.com>

Author: JakubVanek

sensors/ev3_uart_sensor_defs.c

@@ -191,7 +191,7 @@ const struct ev3_uart_sensor_info ev3_uart_sensor_defs[] = {
 				.name		= "COL-CAL",
 				.data_sets	= 4,
 				.num_values	= 3,
-				.data_type	= LEGO_SENSOR_DATA_S32,
+				.data_type	= LEGO_SENSOR_DATA_U16,
 			},
 		},
 	},