ASoC: max98090: Mark cache as dirty prior to restoring

Make sure the cache is fully flushed at resume time.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/max98090.c

@@ -2398,6 +2398,8 @@ static int max98090_resume(struct device *dev)
 	struct max98090_priv *max98090 = dev_get_drvdata(dev);
 	unsigned int status;
 
+	regcache_mark_dirty(max98090->regmap);
+
 	max98090_reset(max98090);
 
 	/* clear IRQ status */