ALSA: hdspm: 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/rme9652/hdspm.c

@@ -6040,11 +6040,11 @@ static int snd_hdspm_hw_rule_out_channels(struct snd_pcm_hw_params *params,
 }
 
 
-static unsigned int hdspm_aes32_sample_rates[] = {
+static const unsigned int hdspm_aes32_sample_rates[] = {
 	32000, 44100, 48000, 64000, 88200, 96000, 128000, 176400, 192000
 };
 
-static struct snd_pcm_hw_constraint_list
+static const struct snd_pcm_hw_constraint_list
 hdspm_hw_constraints_aes32_sample_rates = {
 	.count = ARRAY_SIZE(hdspm_aes32_sample_rates),
 	.list = hdspm_aes32_sample_rates,