SOUND: Add WM8994 codec

This patch adds driver for audio codec WM8994

Signed-off-by: R. Chandrasekar <rcsekar@samsung.com>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/sound/Makefile b/drivers/sound/Makefile
index 18ad2c9..8fdffb1 100644
--- a/drivers/sound/Makefile
+++ b/drivers/sound/Makefile
@@ -27,6 +27,7 @@
 
 COBJS-$(CONFIG_SOUND)	+= sound.o
 COBJS-$(CONFIG_I2S)	+= samsung-i2s.o
+COBJS-$(CONFIG_SOUND_WM8994)	+= wm8994.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)