ASoC: rt5670: Set use_single_rw flag for regmap

RT5670 doesn't support auto incrementing writes so driver should
set the use_single_rw flag for regmap.
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

sound/soc/codecs/rt5670.c

@@ -2614,6 +2614,7 @@ static struct snd_soc_codec_driver soc_codec_dev_rt5670 = {
 static const struct regmap_config rt5670_regmap = {
 	.reg_bits = 8,
 	.val_bits = 16,
+	.use_single_rw = true,
 	.max_register = RT5670_VENDOR_ID2 + 1 + (ARRAY_SIZE(rt5670_ranges) *
 					       RT5670_PR_SPACING),
 	.volatile_reg = rt5670_volatile_register,