ASoC: MPC5200: replace of_device with platform_device

'struct of_device' no longer exists, and its functionality has been merged
into platform_device.  Update the MPC5200 audio DMA driver (mpc5200_dma)
accordingly.  This fixes a build break.
Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org

sound/soc/fsl/mpc5200_dma.c

@@ -369,7 +369,7 @@ static struct snd_soc_platform_driver mpc5200_audio_dma_platform = {
 	.pcm_free	= &psc_dma_free,
 };
 
-static int mpc5200_hpcd_probe(struct of_device *op)
+static int mpc5200_hpcd_probe(struct platform_device *op)
 {
 	phys_addr_t fifo;
 	struct psc_dma *psc_dma;
@@ -487,7 +487,7 @@ static int mpc5200_hpcd_probe(struct of_device *op)
 	return ret;
 }
 
-static int mpc5200_hpcd_remove(struct of_device *op)
+static int mpc5200_hpcd_remove(struct platform_device *op)
 {
 	struct psc_dma *psc_dma = dev_get_drvdata(&op->dev);
 
@@ -519,7 +519,7 @@ MODULE_DEVICE_TABLE(of, mpc5200_hpcd_match);
 static struct platform_driver mpc5200_hpcd_of_driver = {
 	.probe		= mpc5200_hpcd_probe,
 	.remove		= mpc5200_hpcd_remove,
-	.dev = {
+	.driver = {
 		.owner		= THIS_MODULE,
 		.name		= "mpc5200-pcm-audio",
 		.of_match_table    = mpc5200_hpcd_match,