ASoC: intel: bxt: 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>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/bxt_da7219_max98357a.c

@@ -238,31 +238,31 @@ static int broxton_da7219_fe_init(struct snd_soc_pcm_runtime *rtd)
 	return 0;
 }
 
-static unsigned int rates[] = {
+static const unsigned int rates[] = {
 	48000,
 };
 
-static struct snd_pcm_hw_constraint_list constraints_rates = {
+static const struct snd_pcm_hw_constraint_list constraints_rates = {
 	.count = ARRAY_SIZE(rates),
 	.list  = rates,
 	.mask = 0,
 };
 
-static unsigned int channels[] = {
+static const unsigned int channels[] = {
 	DUAL_CHANNEL,
 };
 
-static struct snd_pcm_hw_constraint_list constraints_channels = {
+static const struct snd_pcm_hw_constraint_list constraints_channels = {
 	.count = ARRAY_SIZE(channels),
 	.list = channels,
 	.mask = 0,
 };
 
-static unsigned int channels_quad[] = {
+static const unsigned int channels_quad[] = {
 	QUAD_CHANNEL,
 };
 
-static struct snd_pcm_hw_constraint_list constraints_channels_quad = {
+static const struct snd_pcm_hw_constraint_list constraints_channels_quad = {
 	.count = ARRAY_SIZE(channels_quad),
 	.list = channels_quad,
 	.mask = 0,

sound/soc/intel/boards/bxt_rt298.c

@@ -207,11 +207,11 @@ static const struct snd_soc_ops broxton_rt298_ops = {
 	.hw_params = broxton_rt298_hw_params,
 };
 
-static unsigned int rates[] = {
+static const unsigned int rates[] = {
 	48000,
 };
 
-static struct snd_pcm_hw_constraint_list constraints_rates = {
+static const struct snd_pcm_hw_constraint_list constraints_rates = {
 	.count = ARRAY_SIZE(rates),
 	.list  = rates,
 	.mask = 0,
@@ -227,11 +227,11 @@ static int broxton_dmic_fixup(struct snd_soc_pcm_runtime *rtd,
 	return 0;
 }
 
-static unsigned int channels_dmic[] = {
+static const unsigned int channels_dmic[] = {
 	1, 2, 3, 4,
 };
 
-static struct snd_pcm_hw_constraint_list constraints_dmic_channels = {
+static const struct snd_pcm_hw_constraint_list constraints_dmic_channels = {
 	.count = ARRAY_SIZE(channels_dmic),
 	.list = channels_dmic,
 	.mask = 0,
@@ -253,11 +253,11 @@ static const struct snd_soc_ops broxton_dmic_ops = {
 	.startup = broxton_dmic_startup,
 };
 
-static unsigned int channels[] = {
+static const unsigned int channels[] = {
 	2,
 };
 
-static struct snd_pcm_hw_constraint_list constraints_channels = {
+static const struct snd_pcm_hw_constraint_list constraints_channels = {
 	.count = ARRAY_SIZE(channels),
 	.list = channels,
 	.mask = 0,