ASoC: twl6040: Fix analog Mic L & R mux controls

The mux control has 4 elements not 3

Signed-off-by: Margarita Olaya Cabrera <magi.olaya@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

sound/soc/codecs/twl6040.c

@@ -508,8 +508,8 @@ static const char *twl6040_amicr_texts[] =
 	{"Headset Mic", "Sub Mic", "Aux/FM Right", "Off"};
 
 static const struct soc_enum twl6040_enum[] = {
-	SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 3, twl6040_amicl_texts),
-	SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 3, twl6040_amicr_texts),
+	SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 4, twl6040_amicl_texts),
+	SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 4, twl6040_amicr_texts),
 };
 
 static const char *twl6040_hs_texts[] = {