ALSA: drivers: make snd_pcm_hardware const

Make these const as they are only used in a copy operation.
Done using Coccinelle.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/drivers/vx/vx_pcm.c

@@ -500,7 +500,7 @@ static int vx_stop_stream(struct vx_core *chip, struct vx_pipe *pipe)
  * playback hw information
  */
 
-static struct snd_pcm_hardware vx_pcm_playback_hw = {
+static const struct snd_pcm_hardware vx_pcm_playback_hw = {
 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 				 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP_VALID /*|*/
 				 /*SNDRV_PCM_INFO_RESUME*/),
@@ -891,7 +891,7 @@ static const struct snd_pcm_ops vx_pcm_playback_ops = {
  * playback hw information
  */
 
-static struct snd_pcm_hardware vx_pcm_capture_hw = {
+static const struct snd_pcm_hardware vx_pcm_capture_hw = {
 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 				 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP_VALID /*|*/
 				 /*SNDRV_PCM_INFO_RESUME*/),