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.c b/sound/soc/codecs/arizona.c
index 0be04b5..f3680c3 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -79,6 +79,8 @@
 	"IN2R",
 	"IN3L",
 	"IN3R",
+	"IN4L",
+	"IN4R",
 	"AIF1RX1",
 	"AIF1RX2",
 	"AIF1RX3",
@@ -138,6 +140,8 @@
 	0x13,
 	0x14,
 	0x15,
+	0x16,
+	0x17,
 	0x20,  /* AIF1RX1 */
 	0x21,
 	0x22,