ASoC: twl6040/sdp4430: Change legacy DAI name

Change the legacy DAI name from "twl6040-hifi" to "twl6040-legacy" to
be more intuitive.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c
index 3908b88..760701e 100644
--- a/sound/soc/codecs/twl6040.c
+++ b/sound/soc/codecs/twl6040.c
@@ -1444,7 +1444,7 @@
 
 static struct snd_soc_dai_driver twl6040_dai[] = {
 {
-	.name = "twl6040-hifi",
+	.name = "twl6040-legacy",
 	.playback = {
 		.stream_name = "Playback",
 		.channels_min = 1,