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/smdk5420_defconfig b/configs/smdk5420_defconfig
index 60bcf0a..9d58ac1 100644
--- a/configs/smdk5420_defconfig
+++ b/configs/smdk5420_defconfig
@@ -6,6 +6,7 @@
 CONFIG_SPL=y
 CONFIG_SYS_PROMPT="SMDK5420 # "
 # CONFIG_CMD_IMLS is not set
+CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_DM_I2C_COMPAT=y
 CONFIG_SPI_FLASH=y