ASoC: sh: constify snd_pcm_ops structures

snd_pcm_ops are not supposed to change at runtime. All functions
working with snd_pcm_ops provided by <sound/soc.h> work with
const snd_pcm_ops. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/dma-sh7760.c

@@ -294,7 +294,7 @@ static snd_pcm_uframes_t camelot_pos(struct snd_pcm_substream *substream)
 	return bytes_to_frames(runtime, pos);
 }
 
-static struct snd_pcm_ops camelot_pcm_ops = {
+static const struct snd_pcm_ops camelot_pcm_ops = {
 	.open		= camelot_pcm_open,
 	.close		= camelot_pcm_close,
 	.ioctl		= snd_pcm_lib_ioctl,

sound/soc/sh/fsi.c

@@ -1755,7 +1755,7 @@ static snd_pcm_uframes_t fsi_pointer(struct snd_pcm_substream *substream)
 	return fsi_sample2frame(fsi, io->buff_sample_pos);
 }
 
-static struct snd_pcm_ops fsi_pcm_ops = {
+static const struct snd_pcm_ops fsi_pcm_ops = {
 	.open		= fsi_pcm_open,
 	.ioctl		= snd_pcm_lib_ioctl,
 	.hw_params	= fsi_hw_params,

sound/soc/sh/rcar/core.c

@@ -1158,7 +1158,7 @@ static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
 	return pointer;
 }
 
-static struct snd_pcm_ops rsnd_pcm_ops = {
+static const struct snd_pcm_ops rsnd_pcm_ops = {
 	.open		= rsnd_pcm_open,
 	.ioctl		= snd_pcm_lib_ioctl,
 	.hw_params	= rsnd_hw_params,

sound/soc/sh/siu_pcm.c

@@ -593,7 +593,7 @@ static void siu_pcm_free(struct snd_pcm *pcm)
 	dev_dbg(pcm->card->dev, "%s\n", __func__);
 }
 
-static struct snd_pcm_ops siu_pcm_ops = {
+static const struct snd_pcm_ops siu_pcm_ops = {
 	.open		= siu_pcm_open,
 	.close		= siu_pcm_close,
 	.ioctl		= snd_pcm_lib_ioctl,