ASoC: fsl: make snd_soc_platform_driver const

Make these const as they are only passed as the 2nd argument to the function
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/fsl/imx-pcm-fiq.c

@@ -341,7 +341,7 @@ static void imx_pcm_fiq_free(struct snd_pcm *pcm)
 	imx_pcm_free(pcm);
 }
 
-static struct snd_soc_platform_driver imx_soc_platform_fiq = {
+static const struct snd_soc_platform_driver imx_soc_platform_fiq = {
 	.ops		= &imx_pcm_ops,
 	.pcm_new	= imx_pcm_fiq_new,
 	.pcm_free	= imx_pcm_fiq_free,

sound/soc/fsl/mpc5200_dma.c

@@ -356,7 +356,7 @@ static void psc_dma_free(struct snd_pcm *pcm)
 	}
 }
 
-static struct snd_soc_platform_driver mpc5200_audio_dma_platform = {
+static const struct snd_soc_platform_driver mpc5200_audio_dma_platform = {
 	.ops		= &psc_dma_ops,
 	.pcm_new	= &psc_dma_new,
 	.pcm_free	= &psc_dma_free,