extcon: max77843: add device-tree compatible string

Add the needed device-tree compatible string to the MAX77843 extcon
driver, so it can be automatically loaded when compiled as a kernel
module and given device-tree contains separate 'muic' node under the main
MAX77843 PMIC node.

Link: https://lore.kernel.org/all/20231006100434.2908243-2-m.szyprowski@samsung.com/
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

drivers/extcon/extcon-max77843.c

@@ -946,9 +946,16 @@ static const struct platform_device_id max77843_muic_id[] = {
 };
 MODULE_DEVICE_TABLE(platform, max77843_muic_id);
 
+static const struct of_device_id of_max77843_muic_dt_match[] = {
+	{ .compatible = "maxim,max77843-muic", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, of_max77843_muic_dt_match);
+
 static struct platform_driver max77843_muic_driver = {
 	.driver		= {
 		.name		= "max77843-muic",
+		.of_match_table = of_max77843_muic_dt_match,
 	},
 	.probe		= max77843_muic_probe,
 	.remove		= max77843_muic_remove,