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/eco5pk_defconfig b/configs/eco5pk_defconfig
index 467a0a1..b81ad58 100644
--- a/configs/eco5pk_defconfig
+++ b/configs/eco5pk_defconfig
@@ -3,6 +3,7 @@
 CONFIG_TARGET_ECO5PK=y
 CONFIG_SPL=y
 CONFIG_FIT=y
+CONFIG_BOOTDELAY=10
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="ECO5-PK # "
 # CONFIG_CMD_IMLS is not set