Convert CONFIG_CMD_EECONFIG to Kconfig

This converts the following to Kconfig:
   CONFIG_CMD_EECONFIG

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

board/gateworks/gw_ventana/Kconfig

@@ -9,4 +9,9 @@ config SYS_VENDOR
 config SYS_CONFIG_NAME
 	default "gw_ventana"
 
+config CMD_EECONFIG
+	bool "Enable the 'econfig' command"
+	help
+	  Provides access to EEPROM configuration on Gateworks Ventana
+
 endif

configs/gwventana_emmc_defconfig

@@ -4,6 +4,7 @@ CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_TARGET_GW_VENTANA=y
+CONFIG_CMD_EECONFIG=y
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_SPL_WATCHDOG_SUPPORT=y

configs/gwventana_gw5904_defconfig

@@ -4,6 +4,7 @@ CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_TARGET_GW_VENTANA=y
+CONFIG_CMD_EECONFIG=y
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_SPL_WATCHDOG_SUPPORT=y

configs/gwventana_nand_defconfig

@@ -4,6 +4,7 @@ CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_TARGET_GW_VENTANA=y
+CONFIG_CMD_EECONFIG=y
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_SPL_NAND_SUPPORT=y

include/configs/gw_ventana.h

@@ -142,7 +142,6 @@
 /* Various command support */
 #define CONFIG_CMD_HDMIDETECT    /* detect HDMI output device */
 #define CONFIG_CMD_GSC
-#define CONFIG_CMD_EECONFIG      /* Gateworks EEPROM config cmd */
 #define CONFIG_CMD_UNZIP         /* gzwrite */
 #define CONFIG_RBTREE
 

include/configs/pcm058.h

@@ -88,7 +88,6 @@
 /* Various command support */
 #define CONFIG_CMD_HDMIDETECT    /* detect HDMI output device */
 #define CONFIG_CMD_GSC
-#define CONFIG_CMD_EECONFIG      /* Gateworks EEPROM config cmd */
 #define CONFIG_RBTREE
 
 /* Physical Memory Map */

scripts/config_whitelist.txt

@@ -383,7 +383,6 @@ CONFIG_CM922T_XA10
 CONFIG_CMDLINE_EDITING
 CONFIG_CMDLINE_PS_SUPPORT
 CONFIG_CMDLINE_TAG
-CONFIG_CMD_EECONFIG
 CONFIG_CMD_EEPROM
 CONFIG_CMD_EEPROM_LAYOUT
 CONFIG_CMD_ENTERRCM