ASoC: fsl_easrc: Fix "Function parameter not described" warnings

Obtained with:
$ make W=1

sound/soc/fsl/fsl_easrc.c:403: warning: Function parameter or member 'easrc' not described in 'fsl_easrc_normalize_filter'
sound/soc/fsl/fsl_easrc.c:403: warning: Function parameter or member 'infilter' not described in 'fsl_easrc_normalize_filter'
sound/soc/fsl/fsl_easrc.c:403: warning: Function parameter or member 'outfilter' not described in 'fsl_easrc_normalize_filter'
sound/soc/fsl/fsl_easrc.c:403: warning: Function parameter or member 'shift' not described in 'fsl_easrc_normalize_filter'

Fixes: 955ac624 ("ASoC: fsl_easrc: Add EASRC ASoC CPU DAI drivers")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/d166b868e6d294de47a89857be03758ec82a0a61.1591155860.git.shengjiu.wang@nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/fsl_easrc.c

@@ -389,11 +389,11 @@ static int fsl_easrc_resampler_config(struct fsl_asrc *easrc)
  *  For input int[16, 24, 32] -> output float32
  *      scale it by multiplying filter coefficients by 2^-15, 2^-23, 2^-31
  *  input:
- *      asrc:  Structure pointer of fsl_asrc
- *      infilter : Pointer to non-scaled input filter
- *      shift:  The multiply factor
+ *      @easrc:  Structure pointer of fsl_asrc
+ *      @infilter : Pointer to non-scaled input filter
+ *      @shift:  The multiply factor
  *  output:
- *      outfilter: scaled filter
+ *      @outfilter: scaled filter
  */
 static int fsl_easrc_normalize_filter(struct fsl_asrc *easrc,
 				      u64 *infilter,