ALSA: via82xx: Constify hw_constraints

snd_pcm_hw_constraint_list(), *_ratnums() and *_ratdens() receive the
const pointers.  Constify the corresponding static objects for better
hardening.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/via82xx.c

@@ -1286,10 +1286,10 @@ static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
 	/* channels constraint for VIA8233A
 	 * 3 and 5 channels are not supported
 	 */
-	static unsigned int channels[] = {
+	static const unsigned int channels[] = {
 		1, 2, 4, 6
 	};
-	static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
+	static const struct snd_pcm_hw_constraint_list hw_constraints_channels = {
 		.count = ARRAY_SIZE(channels),
 		.list = channels,
 		.mask = 0,

sound/pci/via82xx_modem.c

@@ -744,8 +744,8 @@ static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	int err;
-        static unsigned int rates[] = { 8000,  9600, 12000, 16000 };
-        static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
+	static const unsigned int rates[] = { 8000,  9600, 12000, 16000 };
+	static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
                 .count = ARRAY_SIZE(rates),
                 .list = rates,
                 .mask = 0,