leds: turris-omnia: add missing MODULE_DEVICE_TABLE

This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.

Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: Zou Wei <[e-mail]>
Signed-off-by: Pavel Machek <[e-mail]>

drivers/leds/leds-turris-omnia.c

···
 	{ "omnia", 0 },
 	{ }
 };
+MODULE_DEVICE_TABLE(i2c, omnia_id);
 
 static struct i2c_driver omnia_leds_driver = {
 	.probe		= omnia_leds_probe,