ASoC: adau17x1: Add basic DT support for adau17x1

Signed-off-by: Andreas Irestål <andire@axis.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/adau1781-spi.c b/sound/soc/codecs/adau1781-spi.c
index 33a73ff..3d965a0 100644
--- a/sound/soc/codecs/adau1781-spi.c
+++ b/sound/soc/codecs/adau1781-spi.c
@@ -59,9 +59,19 @@
 };
 MODULE_DEVICE_TABLE(spi, adau1781_spi_id);
 
+#if defined(CONFIG_OF)
+static const struct of_device_id adau1781_spi_dt_ids[] = {
+	{ .compatible = "adi,adau1381", },
+	{ .compatible = "adi,adau1781", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, adau1781_spi_dt_ids);
+#endif
+
 static struct spi_driver adau1781_spi_driver = {
 	.driver = {
 		.name = "adau1781",
+		.of_match_table = of_match_ptr(adau1781_spi_dt_ids),
 	},
 	.probe = adau1781_spi_probe,
 	.remove = adau1781_spi_remove,