ASoC: ams-delta: Use the same name for platform as the cpu_dai

Now that the platform driver is registered with the cpu_dai's device we
can use the same name for it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/omap/ams-delta.c b/sound/soc/omap/ams-delta.c
index 2ac0a0c..b0f8dbc 100644
--- a/sound/soc/omap/ams-delta.c
+++ b/sound/soc/omap/ams-delta.c
@@ -536,7 +536,7 @@
 	.cpu_dai_name = "omap-mcbsp.1",
 	.codec_dai_name = "cx20442-voice",
 	.init = ams_delta_cx20442_init,
-	.platform_name = "omap-pcm-audio",
+	.platform_name = "omap-mcbsp.1",
 	.codec_name = "cx20442-codec",
 	.ops = &ams_delta_ops,
 };