Move these options to Kconfig and remove them from the CONFIG files.
Signed-off-by: Simon Glass <sjg@chromium.org>
 config SYS_CONFIG_NAME
        default "canyonlands"
 
+choice BOARD_TYPE
+       prompt "Select which board to build for"
+
+config CANYONLANDS
+       bool "Glacier"
+       help
+         Select this to build for the Canyonlands 460EX board.
+
+config GLACIER
+       bool "Glacier"
+       help
+         Select this to build for the Glacier 460GT board.
+
+config ARCHES
+       bool "Arches"
+       help
+         Select this to build for the Arches dual 460GT board.
+
+endchoice
+
 endif
 
-CONFIG_SYS_EXTRA_OPTIONS="ARCHES"
 CONFIG_PPC=y
 CONFIG_4xx=y
 CONFIG_TARGET_CANYONLANDS=y
+CONFIG_ARCHES=y
 
-CONFIG_SYS_EXTRA_OPTIONS="CANYONLANDS"
 CONFIG_PPC=y
 CONFIG_4xx=y
 CONFIG_TARGET_CANYONLANDS=y
+CONFIG_CANYONLANDS=y
 
-CONFIG_SYS_EXTRA_OPTIONS="GLACIER"
 CONFIG_PPC=y
 CONFIG_4xx=y
 CONFIG_TARGET_CANYONLANDS=y
+CONFIG_GLACIER=y
 
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
+#include <linux/kconfig.h>
+
 /*-----------------------------------------------------------------------
  * High Level Configuration Options
  *----------------------------------------------------------------------*/