davinci: audio clocks: use struct device instead of clock names

There is no need to pass clock name strings in platform_data.
Instead, setup clkdev nodes to have correct ASoC device names.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-davinci/board-dm644x-evm.c

@@ -225,9 +225,7 @@ static struct platform_device ide_dev = {
 	},
 };
 
-static struct snd_platform_data dm644x_evm_snd_data = {
-	.clk_name	= "asp0",
-};
+static struct snd_platform_data dm644x_evm_snd_data;
 
 /*----------------------------------------------------------------------*/