ASoC: max98373: Removing 0x203E from the volatile reg

The 0x203E speaker gain register should be non-volatile.
This register value was not able to be synced because it was marked as
volatile.
Signed-off-by: Ryan Lee <ryans.lee@analog.com>
Link: https://lore.kernel.org/r/20220723015220.4169-1-ryans.lee@analog.comReviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/max98373-i2c.c

@@ -442,7 +442,6 @@ static bool max98373_volatile_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case MAX98373_R2000_SW_RESET ... MAX98373_R2009_INT_FLAG3:
-	case MAX98373_R203E_AMP_PATH_GAIN:
 	case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK:
 	case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK:
 	case MAX98373_R20B6_BDE_CUR_STATE_READBACK: