ASoC: sunxi: sun4i-i2s: update kernel-doc

Remove warnings

sound/soc/sunxi/sun4i-i2s.c:205: warning: Function parameter or member
'num_din_pins' not described in 'sun4i_i2s_quirks'

sound/soc/sunxi/sun4i-i2s.c:205: warning: Function parameter or member
'num_dout_pins' not described in 'sun4i_i2s_quirks'
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220616220802.136282-3-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sunxi/sun4i-i2s.c

@@ -161,6 +161,8 @@ struct sun4i_i2s;
  * @field_clkdiv_mclk_en: regmap field to enable mclk output.
  * @field_fmt_wss: regmap field to set word select size.
  * @field_fmt_sr: regmap field to set sample resolution.
+ * @num_din_pins: input pins
+ * @num_dout_pins: output pins (currently set but unused)
  * @bclk_dividers: bit clock dividers array
  * @num_bclk_dividers: number of bit clock dividers
  * @mclk_dividers: mclk dividers array