ASoC: max98383: fix i2c probe failure

Added reset_gpio configuration for i2c probe successfully.
If not,i2c address can't be found rightly.

Error information:
max98373 3-0031: Failed to read: 0x21FF

Fixed:
[3.761299@3] max98373 3-0031: MAX98373 revisionID: 0x43
[3.828911@3] asoc-aml-card auge_sound: max98373-aif1 <-> TDM-B mapping ok

Signed-off-by: fengchunguo <chunguo.feng@amlogic.com>
Link: https://lore.kernel.org/r/20190715095556.1614-1-chunguo.feng@amlogic.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/max98373.h

@@ -203,6 +203,7 @@
 
 struct max98373_priv {
 	struct regmap *regmap;
+	int reset_gpio;
 	unsigned int v_slot;
 	unsigned int i_slot;
 	unsigned int spkfb_slot;