ALSA: rme9652: 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>
diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
index fe36d44..9535e6a 100644
--- a/sound/pci/rme9652/hdsp.c
+++ b/sound/pci/rme9652/hdsp.c
@@ -4211,7 +4211,7 @@
 	return result;
 }
 
-static struct snd_pcm_hardware snd_hdsp_playback_subinfo =
+static const struct snd_pcm_hardware snd_hdsp_playback_subinfo =
 {
 	.info =			(SNDRV_PCM_INFO_MMAP |
 				 SNDRV_PCM_INFO_MMAP_VALID |
@@ -4241,7 +4241,7 @@
 	.fifo_size =		0
 };
 
-static struct snd_pcm_hardware snd_hdsp_capture_subinfo =
+static const struct snd_pcm_hardware snd_hdsp_capture_subinfo =
 {
 	.info =			(SNDRV_PCM_INFO_MMAP |
 				 SNDRV_PCM_INFO_MMAP_VALID |