ASoC: codecs: es8326: change es8326_regmap_config to static

es8326_regmap_config is only used in es8326.c now, change it to static.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220817091519.2487385-1-yangyingliang@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/es8326.c

@@ -207,7 +207,7 @@ static const struct regmap_access_table es8326_volatile_table = {
 	.n_yes_ranges = ARRAY_SIZE(es8326_volatile_ranges),
 };
 
-const struct regmap_config es8326_regmap_config = {
+static const struct regmap_config es8326_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = 0xff,