ASoC: pxa: make snd_soc_platform_driver const

Make these const as they are only passed as the 2nd argument to the
function devm_snd_soc_register_platform, which is of type const.
Done using Coccinelle.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/pxa/mmp-pcm.c

@@ -211,7 +211,7 @@ err:
 	return ret;
 }
 
-static struct snd_soc_platform_driver mmp_soc_platform = {
+static const struct snd_soc_platform_driver mmp_soc_platform = {
 	.ops		= &mmp_pcm_ops,
 	.pcm_new	= mmp_pcm_new,
 	.pcm_free	= mmp_pcm_free_dma_buffers,

sound/soc/pxa/pxa2xx-pcm.c

@@ -84,7 +84,7 @@ static int pxa2xx_soc_pcm_new(struct snd_soc_pcm_runtime *rtd)
 	return ret;
 }
 
-static struct snd_soc_platform_driver pxa2xx_soc_platform = {
+static const struct snd_soc_platform_driver pxa2xx_soc_platform = {
 	.ops		= &pxa2xx_pcm_ops,
 	.pcm_new	= pxa2xx_soc_pcm_new,
 	.pcm_free	= pxa2xx_pcm_free_dma_buffers,