pinctrl: loongson2: fix module autoloading

Add MODULE_DEVICE_TABLE(), so the module could be properly autoloaded
based on the alias from of_device_id table.  Pin controllers are
considered core components, so usually they are built-in, however these
can be built and used as modules on some generic kernel.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Message-ID: <20240411064614.7409-3-krzk@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-loongson2.c

@@ -286,6 +286,7 @@ static const struct of_device_id loongson2_pinctrl_dt_match[] = {
 	},
 	{ }
 };
+MODULE_DEVICE_TABLE(of, loongson2_pinctrl_dt_match);
 
 static struct platform_driver loongson2_pinctrl_driver = {
 	.probe		= loongson2_pinctrl_probe,