Kconfig: Move CONFIG_BOOTDELAY under autoboot options

This option relates to autoboot, so move it there.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/Kconfig b/common/Kconfig
index 46f2dbf..17fbadc 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -1,21 +1,5 @@
 source "common/Kconfig.boot"
 
-config BOOTDELAY
-	int "delay in seconds before automatically booting"
-	default 2
-	depends on AUTOBOOT
-	help
-	  Delay before automatically running bootcmd;
-	  set to 0 to autoboot with no delay, but you can stop it by key input.
-	  set to -1 to disable autoboot.
-	  set to -2 to autoboot with no delay and not check for abort
-
-	  If this value is >= 0 then it is also used for the default delay
-	  before starting the default entry in bootmenu. If it is < 0 then
-	  a default value of 10s is used.
-
-	  See doc/README.autoboot for details.
-
 config USE_BOOTARGS
 	bool "Enable boot arguments"
 	help
diff --git a/common/Kconfig.boot b/common/Kconfig.boot
index bb069e2..058e62a 100644
--- a/common/Kconfig.boot
+++ b/common/Kconfig.boot
@@ -699,6 +699,22 @@
 	help
 	  This enables the autoboot.  See doc/README.autoboot for detail.
 
+config BOOTDELAY
+	int "delay in seconds before automatically booting"
+	default 2
+	depends on AUTOBOOT
+	help
+	  Delay before automatically running bootcmd;
+	  set to 0 to autoboot with no delay, but you can stop it by key input.
+	  set to -1 to disable autoboot.
+	  set to -2 to autoboot with no delay and not check for abort
+
+	  If this value is >= 0 then it is also used for the default delay
+	  before starting the default entry in bootmenu. If it is < 0 then
+	  a default value of 10s is used.
+
+	  See doc/README.autoboot for details.
+
 config AUTOBOOT_KEYED
 	bool "Stop autobooting via specific input key / string"
 	default n