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/bf537-stamp_defconfig b/configs/bf537-stamp_defconfig
index a60c1b7..1b3d313 100644
--- a/configs/bf537-stamp_defconfig
+++ b/configs/bf537-stamp_defconfig
@@ -1,5 +1,6 @@
 CONFIG_BLACKFIN=y
 CONFIG_TARGET_BF537_STAMP=y
+CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_SPI_FLASH=y