ALSA: arm: More constification

Apply const prefix to the static channel list table.

Just for minor optimization and no functional changes.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Takashi Iwai <[e-mail]>

sound/arm/aaci.c

···
 static int aaci_rule_channels(struct snd_pcm_hw_params *p,
 	struct snd_pcm_hw_rule *rule)
 {
-	static unsigned int channel_list[] = { 2, 4, 6 };
+	static const unsigned int channel_list[] = { 2, 4, 6 };
 	struct aaci *aaci = rule->private;
 	unsigned int mask = 1 << 0, slots;