ptp_pch: Load module automatically if ID matches

The driver can't be loaded automatically because it misses
module alias to be provided. Add corresponding MODULE_DEVICE_TABLE()
call to the driver.

Fixes: 863d08ec ("supports eg20t ptp clock")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/ptp/ptp_pch.c

@@ -644,6 +644,7 @@ static const struct pci_device_id pch_ieee1588_pcidev_id[] = {
 	 },
 	{0}
 };
+MODULE_DEVICE_TABLE(pci, pch_ieee1588_pcidev_id);
 
 static SIMPLE_DEV_PM_OPS(pch_pm_ops, pch_suspend, pch_resume);