common: add CMD_GPIO to Kconfig

Add CMD_GPIO to Kconfig and run tools/moveconfig.py .

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/x600_defconfig b/configs/x600_defconfig
index 61d91d4..a1b2e33 100644
--- a/configs/x600_defconfig
+++ b/configs/x600_defconfig
@@ -5,6 +5,7 @@
 CONFIG_AUTOBOOT_KEYED=y
 CONFIG_AUTOBOOT_PROMPT="Hit SPACE in %d seconds to stop autoboot.\n"
 CONFIG_AUTOBOOT_STOP_STR=" "
+CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_NETDEVICES=y
 CONFIG_ETH_DESIGNWARE=y