ALSA: ctxfi: make snd_pcm_hardware const

Make these const as they are only used during a copy operation.
Done using Coccinelle.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ctxfi/ctpcm.c

@@ -21,7 +21,7 @@
 #include <sound/pcm.h>
 
 /* Hardware descriptions for playback */
-static struct snd_pcm_hardware ct_pcm_playback_hw = {
+static const struct snd_pcm_hardware ct_pcm_playback_hw = {
 	.info			= (SNDRV_PCM_INFO_MMAP |
 				   SNDRV_PCM_INFO_INTERLEAVED |
 				   SNDRV_PCM_INFO_BLOCK_TRANSFER |
@@ -46,7 +46,7 @@ static struct snd_pcm_hardware ct_pcm_playback_hw = {
 	.fifo_size		= 0,
 };
 
-static struct snd_pcm_hardware ct_spdif_passthru_playback_hw = {
+static const struct snd_pcm_hardware ct_spdif_passthru_playback_hw = {
 	.info			= (SNDRV_PCM_INFO_MMAP |
 				   SNDRV_PCM_INFO_INTERLEAVED |
 				   SNDRV_PCM_INFO_BLOCK_TRANSFER |
@@ -69,7 +69,7 @@ static struct snd_pcm_hardware ct_spdif_passthru_playback_hw = {
 };
 
 /* Hardware descriptions for capture */
-static struct snd_pcm_hardware ct_pcm_capture_hw = {
+static const struct snd_pcm_hardware ct_pcm_capture_hw = {
 	.info			= (SNDRV_PCM_INFO_MMAP |
 				   SNDRV_PCM_INFO_INTERLEAVED |
 				   SNDRV_PCM_INFO_BLOCK_TRANSFER |