ASoC: fsl: fsl_spdif: fix kernel-doc

Fix W=1 warnings. kernel-doc syntax was not followed and missing parameter
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/20200702192141.168018-5-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/fsl_spdif.c

@@ -81,8 +81,8 @@ struct spdif_mixer_control {
 };
 
 /**
- * fsl_spdif_priv: Freescale SPDIF private data
- *
+ * struct fsl_spdif_priv - Freescale SPDIF private data
+ * @soc: SPDIF soc data
  * @fsl_spdif_control: SPDIF control data
  * @cpu_dai_drv: cpu dai driver
  * @pdev: platform device pointer
@@ -100,6 +100,7 @@ struct spdif_mixer_control {
  * @spbaclk: SPBA clock (optional, depending on SoC design)
  * @dma_params_tx: DMA parameters for transmit channel
  * @dma_params_rx: DMA parameters for receive channel
+ * @regcache_srpc: regcache for SRPC
  */
 struct fsl_spdif_priv {
 	const struct fsl_spdif_soc_data *soc;