ASoC: sun4i-spdif: Move quirks to the top

The quirks are actually defines in the middle of the file with
short explanation.

Move this at the top and add a section to have coherency with
sun4i-i2s.
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sunxi/sun4i-spdif.c

@@ -161,6 +161,17 @@
 #define SUN4I_SPDIF_SAMFREQ_176_4KHZ		0xc
 #define SUN4I_SPDIF_SAMFREQ_192KHZ		0xe
 
+/**
+ * struct sun4i_spdif_quirks - Differences between SoC variants.
+ *
+ * @reg_dac_tx_data: TX FIFO offset for DMA config.
+ * @has_reset: SoC needs reset deasserted.
+ */
+struct sun4i_spdif_quirks {
+	unsigned int reg_dac_txdata;
+	bool has_reset;
+};
+
 struct sun4i_spdif_dev {
 	struct platform_device *pdev;
 	struct clk *spdif_clk;
@@ -405,11 +416,6 @@ static struct snd_soc_dai_driver sun4i_spdif_dai = {
 	.name = "spdif",
 };
 
-struct sun4i_spdif_quirks {
-	unsigned int reg_dac_txdata;	/* TX FIFO offset for DMA config */
-	bool has_reset;
-};
-
 static const struct sun4i_spdif_quirks sun4i_a10_spdif_quirks = {
 	.reg_dac_txdata	= SUN4I_SPDIF_TXFIFO,
 };