ASoC: arizona: Add IN4 to the mixer tables

Some devices have four input structures rather than three.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h
index 896711e..b894b64 100644
--- a/sound/soc/codecs/arizona.h
+++ b/sound/soc/codecs/arizona.h
@@ -59,7 +59,7 @@
 	struct arizona_dai_priv dai[ARIZONA_MAX_DAI];
 };
 
-#define ARIZONA_NUM_MIXER_INPUTS 55
+#define ARIZONA_NUM_MIXER_INPUTS 57
 
 extern const unsigned int arizona_mixer_tlv[];
 extern const char *arizona_mixer_texts[ARIZONA_NUM_MIXER_INPUTS];