ASoC: cs42l73: Add missing regmap use_single config

This device requires single register transactions, this will
definely cause problems with the new device ID parsing which uses
regmap_bulk_read but might also show up in the cache sync sometimes.
Add the missing flags to the regmap_config.

Fixes: 2649525 ("ASoC: cs42l73: Minor error paths fixups")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210511175718.15416-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs42l73.c

@@ -1268,6 +1268,9 @@ static const struct regmap_config cs42l73_regmap = {
 	.volatile_reg = cs42l73_volatile_register,
 	.readable_reg = cs42l73_readable_register,
 	.cache_type = REGCACHE_RBTREE,
+
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static int cs42l73_i2c_probe(struct i2c_client *i2c_client,