ASoC: rt5640: Add the rt5639 support to the OF match table

The patch adds the rt5639 support to the OF match table.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index 79635ee..2133fa0 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -2157,6 +2157,7 @@
 
 #if defined(CONFIG_OF)
 static const struct of_device_id rt5640_of_match[] = {
+	{ .compatible = "realtek,rt5639", },
 	{ .compatible = "realtek,rt5640", },
 	{},
 };