Input: synaptics - set resolution for MT_POSITION_X/Y axes

Set resolution for MT_POSITION_X and MT_POSITION_Y to match ABS_X and
ABS_Y, respectively.
Signed-off-by: NDaniel Kurtz <djkurtz@chromium.org>
Acked-by: NChase Douglas <chase.douglas@canonical.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

drivers/input/mouse/synaptics.c

@@ -701,6 +701,9 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
 				     priv->x_max ?: XMAX_NOMINAL, 0, 0);
 		input_set_abs_params(dev, ABS_MT_POSITION_Y, YMIN_NOMINAL,
 				     priv->y_max ?: YMAX_NOMINAL, 0, 0);
+
+		input_abs_set_res(dev, ABS_MT_POSITION_X, priv->x_res);
+		input_abs_set_res(dev, ABS_MT_POSITION_Y, priv->y_res);
 	}
 
 	if (SYN_CAP_PALMDETECT(priv->capabilities))