ASoC: tlv320aic23: add an of_match table

Add a device tree match table. This serves to make the driver's support
of device tree more explicit. Perhaps the fallback for DT matching to
using the i2c_device_id table will go away one day, since it fails in
face of devices from different vendors with the same name.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/tlv320aic23-i2c.c

@@ -43,9 +43,16 @@ static const struct i2c_device_id tlv320aic23_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
 
+static const struct of_device_id tlv320aic23_of_match[] = {
+	{ .compatible = "ti,tlv320aic23", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, tlv320aic23_of_match);
+
 static struct i2c_driver tlv320aic23_i2c_driver = {
 	.driver = {
 		   .name = "tlv320aic23-codec",
+		   .of_match_table = of_match_ptr(tlv320aic23_of_match),
 		   },
 	.probe = tlv320aic23_i2c_probe,
 	.remove = __exit_p(tlv320aic23_i2c_remove),