ASoC: constify snd_soc_component_driver struct

Declare `snd_soc_component_driver` as const to move it to a read-only
section for the drivers that do not modify the struct after its
declaration.

The affected drivers only pass this struct to
`devm_snd_soc_register_component()`, whose argument is const and
therefore does not modify the content of the struct.

Signed-off-by: Javier Carrasco <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/au1x/dbdma2.c

···
 }
 
 /* au1xpsc audio platform */
-static struct snd_soc_component_driver au1xpsc_soc_component = {
+static const struct snd_soc_component_driver au1xpsc_soc_component = {
 	.name		= DRV_NAME,
 	.open		= au1xpsc_pcm_open,
 	.close		= au1xpsc_pcm_close,

sound/soc/au1x/dma.c

···
 	return 0;
 }
 
-static struct snd_soc_component_driver alchemy_pcm_soc_component = {
+static const struct snd_soc_component_driver alchemy_pcm_soc_component = {
 	.name		= DRV_NAME,
 	.open		= alchemy_pcm_open,
 	.close		= alchemy_pcm_close,

sound/soc/bcm/cygnus-pcm.c

···
 	return 0;
 }
 
-static struct snd_soc_component_driver cygnus_soc_platform = {
+static const struct snd_soc_component_driver cygnus_soc_platform = {
 	.open		= cygnus_pcm_open,
 	.close		= cygnus_pcm_close,
 	.prepare	= cygnus_pcm_prepare,

sound/soc/codecs/cpcap.c

···
 	return cpcap_audio_reset(component, false);
 }
 
-static struct snd_soc_component_driver soc_codec_dev_cpcap = {
+static const struct snd_soc_component_driver soc_codec_dev_cpcap = {
 	.probe			= cpcap_soc_probe,
 	.controls		= cpcap_snd_controls,
 	.num_controls		= ARRAY_SIZE(cpcap_snd_controls),

sound/soc/codecs/pcm186x.c

···
 	return 0;
 }
 
-static struct snd_soc_component_driver soc_codec_dev_pcm1863 = {
+static const struct snd_soc_component_driver soc_codec_dev_pcm1863 = {
 	.set_bias_level		= pcm186x_set_bias_level,
 	.controls		= pcm1863_snd_controls,
 	.num_controls		= ARRAY_SIZE(pcm1863_snd_controls),
···
 	.endianness		= 1,
 };
 
-static struct snd_soc_component_driver soc_codec_dev_pcm1865 = {
+static const struct snd_soc_component_driver soc_codec_dev_pcm1865 = {
 	.set_bias_level		= pcm186x_set_bias_level,
 	.controls		= pcm1865_snd_controls,
 	.num_controls		= ARRAY_SIZE(pcm1865_snd_controls),

sound/soc/codecs/pcm5102a.c

···
 	},
 };
 
-static struct snd_soc_component_driver soc_component_dev_pcm5102a = {
+static const struct snd_soc_component_driver soc_component_dev_pcm5102a = {
 	.idle_bias_on		= 1,
 	.use_pmdown_time	= 1,
 	.endianness		= 1,

sound/soc/codecs/spdif_receiver.c

···
 			SNDRV_PCM_FMTBIT_S32_LE | \
 			SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
 
-static struct snd_soc_component_driver soc_codec_spdif_dir = {
+static const struct snd_soc_component_driver soc_codec_spdif_dir = {
 	.dapm_widgets		= dir_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(dir_widgets),
 	.dapm_routes		= dir_routes,

sound/soc/codecs/spdif_transmitter.c

···
 	{ "spdif-out", NULL, "Playback" },
 };
 
-static struct snd_soc_component_driver soc_codec_spdif_dit = {
+static const struct snd_soc_component_driver soc_codec_spdif_dit = {
 	.dapm_widgets		= dit_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(dit_widgets),
 	.dapm_routes		= dit_routes,

sound/soc/codecs/tas6424.c

···
 	return 0;
 }
 
-static struct snd_soc_component_driver soc_codec_dev_tas6424 = {
+static const struct snd_soc_component_driver soc_codec_dev_tas6424 = {
 	.set_bias_level		= tas6424_set_bias_level,
 	.controls		= tas6424_snd_controls,
 	.num_controls		= ARRAY_SIZE(tas6424_snd_controls),

sound/soc/stm/stm32_adfsdm.c

···
 	iio_channel_release_all_cb(data);
 }
 
-static struct snd_soc_component_driver stm32_adfsdm_soc_platform = {
+static const struct snd_soc_component_driver stm32_adfsdm_soc_platform = {
 	.open		= stm32_adfsdm_pcm_open,
 	.close		= stm32_adfsdm_pcm_close,
 	.hw_params	= stm32_adfsdm_pcm_hw_params,

sound/soc/uniphier/evea.c

···
 	return ret;
 }
 
-static struct snd_soc_component_driver soc_codec_evea = {
+static const struct snd_soc_component_driver soc_codec_evea = {
 	.probe			= evea_codec_probe,
 	.suspend		= evea_codec_suspend,
 	.resume			= evea_codec_resume,