Move this over to Kconfig and tidy up.
Signed-off-by: Simon Glass <sjg@chromium.org>
 CONFIG_ARCH_EXYNOS=y
 CONFIG_TARGET_ARNDALE=y
 CONFIG_DEFAULT_DEVICE_TREE="exynos5250-arndale"
+CONFIG_SOUND=y
 
 CONFIG_SANDBOX_SPI=y
 CONFIG_SPI_FLASH_SANDBOX=y
 CONFIG_TPM_TIS_SANDBOX=y
+CONFIG_SOUND=y
 
 CONFIG_ARCH_EXYNOS=y
 CONFIG_TARGET_SMDK5250=y
 CONFIG_DEFAULT_DEVICE_TREE="exynos5250-smdk5250"
+CONFIG_SOUND=y
 
 CONFIG_CROS_EC_I2C=y
 CONFIG_CROS_EC_KEYB=y
 CONFIG_CMD_CROS_EC=y
+CONFIG_SOUND=y
 
+config SOUND
+       bool "Enable sound support"
+       help
+         Support making sounds through an audio codec. This is normally a
+         beep at a chosen frequency for a selected length of time. However
+         the drivers support playing arbitrary sound samples using a
+         PCM interface.
+
+         Note: At present the sound setup is somewhat tangled up in that the
+         audio codecs are called from the sound-i2s code. This could be
+         converted to driver model.
 
 /* Sound */
 #define CONFIG_CMD_SOUND
 #ifdef CONFIG_CMD_SOUND
-#define CONFIG_SOUND
 #define CONFIG_I2S_SAMSUNG
 #define CONFIG_I2S
 #define CONFIG_SOUND_MAX98095
 
 
 #define CONFIG_BOARD_LATE_INIT
 
-#define CONFIG_SOUND
 #define CONFIG_SOUND_SANDBOX
 #define CONFIG_CMD_SOUND