ASoC: davinci-mcasp: Change compatible property model to more accurate

Change the model omap2-mcasp-audio in compatible property to
am33xx-mcasp-audio as omap2 does not have mcasp.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index 4c20750..bbc9a07 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -1033,7 +1033,7 @@
 		.data = &da830_mcasp_pdata,
 	},
 	{
-		.compatible = "ti,omap2-mcasp-audio",
+		.compatible = "ti,am33xx-mcasp-audio",
 		.data = &omap2_mcasp_pdata,
 	},
 	{ /* sentinel */ }