ASoC: SOF: Intel: Constify sof_probe_compressed_ops

The only usage of sof_probe_compressed_ops is to assign its address to
the compress_ops field in the snd_soc_component_driver struct, which is
a pointer to const. The assignment is done in sound/soc/sof/pcm.c. Make
it const to allow the compiler to put it in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20210526231013.46530-6-rikard.falkeborn@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/compress.c

@@ -13,7 +13,7 @@
 #include "ops.h"
 #include "probe.h"
 
-struct snd_compress_ops sof_probe_compressed_ops = {
+const struct snd_compress_ops sof_probe_compressed_ops = {
 	.copy		= sof_probe_compr_copy,
 };
 EXPORT_SYMBOL(sof_probe_compressed_ops);

sound/soc/sof/compress.h

@@ -13,7 +13,7 @@
 
 #include <sound/compress_driver.h>
 
-extern struct snd_compress_ops sof_probe_compressed_ops;
+extern const struct snd_compress_ops sof_probe_compressed_ops;
 
 int sof_probe_compr_open(struct snd_compr_stream *cstream,
 		struct snd_soc_dai *dai);