ASoC: SOF: Remove unused drv_name in sof_pdata

This field is only set but never used. Let's remove
it to make code cleaner.
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191204211556.12671-13-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/sof.h

@@ -22,7 +22,6 @@ struct snd_sof_dsp_ops;
  */
 struct snd_sof_pdata {
 	const struct firmware *fw;
-	const char *drv_name;
 	const char *name;
 	const char *platform;
 

sound/soc/sof/nocodec.c

@@ -74,8 +74,6 @@ int sof_nocodec_setup(struct device *dev,
 	if (!mach)
 		return -EINVAL;
 
-	sof_pdata->drv_name = "sof-nocodec";
-
 	mach->drv_name = "sof-nocodec";
 	sof_pdata->tplg_filename = desc->nocodec_tplg_filename;