serial: max310x: add I2C device table for instantiation from userspace

This allows to instantiate a max14830 I2C device from userspace.

Helpful when testing driver with i2c-stub.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://lore.kernel.org/r/20240118152213.2644269-3-hugo@hugovil.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/max310x.c

@@ -1639,6 +1639,15 @@ static void max310x_i2c_remove(struct i2c_client *client)
 	max310x_remove(&client->dev);
 }
 
+static const struct i2c_device_id max310x_i2c_id_table[] = {
+	{ "max3107",	(kernel_ulong_t)&max3107_devtype, },
+	{ "max3108",	(kernel_ulong_t)&max3108_devtype, },
+	{ "max3109",	(kernel_ulong_t)&max3109_devtype, },
+	{ "max14830",	(kernel_ulong_t)&max14830_devtype, },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, max310x_i2c_id_table);
+
 static struct i2c_driver max310x_i2c_driver = {
 	.driver = {
 		.name		= MAX310X_NAME,
@@ -1647,6 +1656,7 @@ static struct i2c_driver max310x_i2c_driver = {
 	},
 	.probe		= max310x_i2c_probe,
 	.remove		= max310x_i2c_remove,
+	.id_table	= max310x_i2c_id_table,
 };
 #endif