ASoC: AD1836: Fix build error

Commit f97d0c6d ("ASoC: AD1836: Add input gain control for ADC2") contained
a typo in the register name, causing a build error. This patch fixes it.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/ad1836.c

@@ -127,7 +127,7 @@ static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
 static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);
 
 static const struct snd_kcontrol_new ad1836_controls[] = {
-	SOC_DOUBLE_TLV("ADC2 Capture Volume", AD183X_ADC_CTRL1, 3, 0, 4, 0,
+	SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
 	    ad1836_in_tlv),
 };