ASoC: rockchip: constify snd_soc_ops structures

Add const to dp/dmic snd_soc_ops.

Fixes: 626d84db (ASoC: rockchip: Add support for DMIC codec)
Fixes: 3313faf1 (ASoC: rockchip: Add support for DP codec)
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/rockchip/rk3399_gru_sound.c

@@ -301,11 +301,11 @@ static const struct snd_soc_ops rockchip_sound_da7219_ops = {
 	.hw_params = rockchip_sound_da7219_hw_params,
 };
 
-static struct snd_soc_ops rockchip_sound_cdndp_ops = {
+static const struct snd_soc_ops rockchip_sound_cdndp_ops = {
 	.hw_params = rockchip_sound_cdndp_hw_params,
 };
 
-static struct snd_soc_ops rockchip_sound_dmic_ops = {
+static const struct snd_soc_ops rockchip_sound_dmic_ops = {
 	.hw_params = rockchip_sound_dmic_hw_params,
 };