ASoC: SOF: imx8: Constify snd_sof_dsp_ops

'struct snd_sof_dsp_ops' is not modified by core code, so it can be made
const for increased code safety.

Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20240426-n-const-ops-var-v2-8-e553fe67ae82@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: krzk

sound/soc/sof/imx/imx8.c

@@ -478,7 +478,7 @@ static int imx8_dsp_set_power_state(struct snd_sof_dev *sdev,
 }
 
 /* i.MX8 ops */
-static struct snd_sof_dsp_ops sof_imx8_ops = {
+static const struct snd_sof_dsp_ops sof_imx8_ops = {
 	/* probe and remove */
 	.probe		= imx8_probe,
 	.remove		= imx8_remove,
@@ -539,7 +539,7 @@ static struct snd_sof_dsp_ops sof_imx8_ops = {
 };
 
 /* i.MX8X ops */
-static struct snd_sof_dsp_ops sof_imx8x_ops = {
+static const struct snd_sof_dsp_ops sof_imx8x_ops = {
 	/* probe and remove */
 	.probe		= imx8_probe,
 	.remove		= imx8_remove,