pwm: pca9685: Drop explicit initialization of struct i2c_device_id::driver_data to 0

The driver doesn't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.

While add it, also remove the trailing commas after the sentinel entry.

Link: https://lore.kernel.org/r/20240508130618.2148631-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

Author: Uwe Kleine-König

drivers/pwm/pwm-pca9685.c

@@ -634,8 +634,8 @@ static int __maybe_unused pca9685_pwm_runtime_resume(struct device *dev)
 }
 
 static const struct i2c_device_id pca9685_id[] = {
-	{ "pca9685", 0 },
-	{ /* sentinel */ },
+	{ "pca9685" },
+	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(i2c, pca9685_id);