pinctrl: pinctrl-zynq: fix module autoloading

Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded
based on the alias from of_device_id table.

Signed-off-by: Liao Chen <[e-mail]>
Link: https://lore.kernel.org/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/pinctrl-zynq.c

···
 	{ .compatible = "xlnx,pinctrl-zynq" },
 	{ }
 };
+MODULE_DEVICE_TABLE(of, zynq_pinctrl_of_match);
 
 static struct platform_driver zynq_pinctrl_driver = {
 	.driver = {