This converts the following to Kconfig:
   CONFIG_CMD_BAT
Signed-off-by: Simon Glass <sjg@chromium.org>
 config SYS_CONFIG_NAME
        default "omap4_sdp4430"
 
+config CMD_BAT
+       bool "Enable board-specific battery command"
+
 endif
 
 CONFIG_ARCH_OMAP2PLUS=y
 CONFIG_OMAP44XX=y
 CONFIG_TARGET_OMAP4_SDP4430=y
+CONFIG_CMD_BAT=y
 # CONFIG_SPL_NAND_SUPPORT is not set
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 
 
 #include <configs/ti_omap4_common.h>
 
-/* Battery Charger */
-#ifndef CONFIG_SPL_BUILD
-#define CONFIG_CMD_BAT                 1
-#endif
-
 /* ENV related config options */
 #define CONFIG_ENV_IS_IN_MMC           1
 #define CONFIG_SYS_MMC_ENV_DEV         1       /* SLOT2: eMMC(1) */
 
 CONFIG_CMDLINE_EDITING
 CONFIG_CMDLINE_PS_SUPPORT
 CONFIG_CMDLINE_TAG
-CONFIG_CMD_BAT
 CONFIG_CMD_BEDBUG
 CONFIG_CMD_BLOB
 CONFIG_CMD_BMODE