ASoC: fsl_easrc: fix duplicate debugfs directory error

This driver registers two components: asrc and easrc, both attached using
the device name as component name. Eventually debugfs directories with
identical name are created in soc_init_component_debugfs(), leading to
error message:
debugfs: '30c90000.easrc' already exists in 'tqm-tlv320aic32'
Fix this by adding the debugfs_prefix.

Signed-off-by: Alexander Stein <[e-mail]>
Reviewed-by: Fabio Estevam <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/fsl/fsl_easrc.c

···
 	.controls		= fsl_easrc_snd_controls,
 	.num_controls		= ARRAY_SIZE(fsl_easrc_snd_controls),
 	.legacy_dai_naming	= 1,
+#ifdef CONFIG_DEBUG_FS
+	.debugfs_prefix		= "easrc",
+#endif
 };
 
 static const struct reg_default fsl_easrc_reg_defaults[] = {