Input: cy8ctmg110_ts - let I2C core configure wake interrupt

I2C core already configures interrupt as wakeup source when device is
registered using I2C_CLIENT_WAKE flag, so let's rely on it instead of
configuring it ourselves.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210603043726.3793876-4-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/cy8ctmg110_ts.c

@@ -254,12 +254,11 @@ static int __maybe_unused cy8ctmg110_suspend(struct device *dev)
 	struct i2c_client *client = to_i2c_client(dev);
 	struct cy8ctmg110 *ts = i2c_get_clientdata(client);
 
-	if (device_may_wakeup(&client->dev))
-		enable_irq_wake(client->irq);
-	else {
+	if (!device_may_wakeup(&client->dev)) {
 		cy8ctmg110_set_sleepmode(ts, true);
 		cy8ctmg110_power(ts, false);
 	}
+
 	return 0;
 }
 
@@ -268,12 +267,11 @@ static int __maybe_unused cy8ctmg110_resume(struct device *dev)
 	struct i2c_client *client = to_i2c_client(dev);
 	struct cy8ctmg110 *ts = i2c_get_clientdata(client);
 
-	if (device_may_wakeup(&client->dev))
-		disable_irq_wake(client->irq);
-	else {
+	if (!device_may_wakeup(&client->dev)) {
 		cy8ctmg110_power(ts, true);
 		cy8ctmg110_set_sleepmode(ts, false);
 	}
+
 	return 0;
 }