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/cobra5272_defconfig b/configs/cobra5272_defconfig
index 3cb69ac..400fca0 100644
--- a/configs/cobra5272_defconfig
+++ b/configs/cobra5272_defconfig
@@ -1,6 +1,7 @@
 CONFIG_M68K=y
 CONFIG_TARGET_COBRA5272=y
 CONFIG_SYS_TEXT_BASE=0xffe00000
+CONFIG_BOOTDELAY=5
 CONFIG_SYS_PROMPT="COBRA > "
 # CONFIG_CMD_LOADB is not set
 # CONFIG_CMD_LOADS is not set