sandbox: exynos: Move CONFIG_SOUND_WM8994 to Kconfig

Move this over to Kconfig and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

configs/arndale_defconfig

@@ -8,3 +8,4 @@ CONFIG_CMD_SOUND=y
 CONFIG_I2S=y
 CONFIG_I2S_SAMSUNG=y
 CONFIG_SOUND_MAX98095=y
+CONFIG_SOUND_WM8994=y

configs/smdk5250_defconfig

@@ -8,3 +8,4 @@ CONFIG_CMD_SOUND=y
 CONFIG_I2S=y
 CONFIG_I2S_SAMSUNG=y
 CONFIG_SOUND_MAX98095=y
+CONFIG_SOUND_WM8994=y

configs/snow_defconfig

@@ -12,3 +12,4 @@ CONFIG_CMD_SOUND=y
 CONFIG_I2S=y
 CONFIG_I2S_SAMSUNG=y
 CONFIG_SOUND_MAX98095=y
+CONFIG_SOUND_WM8994=y

drivers/sound/Kconfig

@@ -36,3 +36,11 @@ config SOUND_MAX98095
 	  Enable the max98095 audio codec. This is connected via I2S for
 	  audio data and I2C for codec control. At present it only works
 	  with the Samsung I2S driver.
+
+config SOUND_WM8994
+	bool "Support Wolfson Micro wm8994 audio codec"
+	depends on I2S_SAMSUNG
+	help
+	  Enable the wm8994 audio codec. This is connected via I2S for
+	  audio data and I2C for codec control. At present it only works
+	  with the Samsung I2S driver.

include/configs/exynos5250-common.h

@@ -28,11 +28,6 @@
 
 #define CONFIG_SYS_INIT_SP_ADDR	CONFIG_IRAM_STACK
 
-/* Sound */
-#ifdef CONFIG_CMD_SOUND
-#define CONFIG_SOUND_WM8994
-#endif
-
 /* I2C */
 #define CONFIG_MAX_I2C_NUM	8