common: bootdelay: move CONFIG_BOOTDELAY into a Kconfig option

move CONFIG_BOOTDELAY into a Kconfig option. Used for this
purpose the moveconfig.py tool in tools.

Signed-off-by: Heiko Schocher <hs@denx.de>

Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
diff --git a/configs/O2MNT_O2M113_defconfig b/configs/O2MNT_O2M113_defconfig
index 6d91a11..2e4b8ab 100644
--- a/configs/O2MNT_O2M113_defconfig
+++ b/configs/O2MNT_O2M113_defconfig
@@ -3,6 +3,7 @@
 CONFIG_TARGET_O2MNT=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="IFM_SENSOR_TYPE=\"O2M113\""
+CONFIG_BOOTDELAY=5
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_I2C=y
 # CONFIG_CMD_SETEXPR is not set