ASoC: SOF: pcm: Constify local snd_sof_dsp_ops

Constify the pointer to 'struct snd_sof_dsp_ops' to annotate that
functioon does not modify pointed data.

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-v2-3-e553fe67ae82@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: krzk

sound/soc/sof/pcm.c

@@ -423,7 +423,7 @@ static int sof_pcm_open(struct snd_soc_component *component,
 	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
-	struct snd_sof_dsp_ops *ops = sof_ops(sdev);
+	const struct snd_sof_dsp_ops *ops = sof_ops(sdev);
 	struct snd_sof_pcm *spcm;
 	struct snd_soc_tplg_stream_caps *caps;
 	int ret;