Input: elan_i2c - fix calculating number of x and y traces.

According to Elan's firmware engineers we should not be subtracting 1 form
the raw number of x and y traces so that the pitch size is correct. For
example, if the touchpad x resolution is 2800 and x trace number is 20,
the pitch size of x should be 2800/20 = 140, not 2800/19 = 147.36.
Signed-off-by: NDuson Lin <dusonlin@emc.com.tw>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/mouse/elan_i2c_i2c.c

@@ -365,8 +365,8 @@ static int elan_i2c_get_num_traces(struct i2c_client *client,
 		return error;
 	}
 
-	*x_traces = val[0] - 1;
-	*y_traces = val[1] - 1;
+	*x_traces = val[0];
+	*y_traces = val[1];
 
 	return 0;
 }

drivers/input/mouse/elan_i2c_smbus.c

@@ -268,8 +268,8 @@ static int elan_smbus_get_num_traces(struct i2c_client *client,
 		return error;
 	}
 
-	*x_traces = val[1] - 1;
-	*y_traces = val[2] - 1;
+	*x_traces = val[1];
+	*y_traces = val[2];
 
 	return 0;
 }