ASoC: sun4i-i2s: fix coding-style for callback definition

Checkpatch script produces warning:
WARNING: function definition argument 'const struct sun4i_i2s *'
should also have an identifier name.

Let's fix this by adding identifier name to get_bclk_parent_rate()
and set_fmt() callback definition.
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-10-peron.clem@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sunxi/sun4i-i2s.c

@@ -180,7 +180,7 @@ struct sun4i_i2s_quirks {
 	const struct sun4i_i2s_clk_div	*mclk_dividers;
 	unsigned int			num_mclk_dividers;
 
-	unsigned long (*get_bclk_parent_rate)(const struct sun4i_i2s *);
+	unsigned long (*get_bclk_parent_rate)(const struct sun4i_i2s *i2s);
 	int	(*get_sr)(unsigned int width);
 	int	(*get_wss)(unsigned int width);
 
@@ -192,7 +192,7 @@ struct sun4i_i2s_quirks {
 	int	(*set_chan_cfg)(const struct sun4i_i2s *i2s,
 				unsigned int channels,	unsigned int slots,
 				unsigned int slot_width);
-	int	(*set_fmt)(const struct sun4i_i2s *, unsigned int);
+	int	(*set_fmt)(const struct sun4i_i2s *i2s, unsigned int fmt);
 };
 
 struct sun4i_i2s {