ASoC: Don't specify the DMA driver for OpenMoko baseband link

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
Acked-by: Liam Girdwood <lrg@ti.com>

sound/soc/samsung/neo1973_wm8753.c

@@ -432,7 +432,6 @@ static struct snd_soc_dai_link neo1973_dai[] = {
 { /* Voice via BT */
 	.name = "Bluetooth",
 	.stream_name = "Voice",
-	.platform_name = "samsung-audio",
 	.cpu_dai_name = "dfbmcs320-pcm",
 	.codec_dai_name = "wm8753-voice",
 	.codec_name = "wm8753-codec.0-001a",