[coreboot] [RFC][PATCH]add EXPERIMENTAL config entry

[Hamo]

Add EXPERIMENTAL config entry so that we can make all ARM-related
entries depend on this now.
We need to make all the ARM-related code available to ALL so that we
can attract those interested in ARM to join us. During this process,
some of the code may not be usable, so we need this to ensure that
those normal users will not be upset with it.

Signed-off-by: Yang Hamo Bai <hamo.by at gmail.com>

Index: src/Kconfig
===================================================================
--- src/Kconfig	(revision 6479)
+++ src/Kconfig	(working copy)
@@ -21,6 +21,12 @@

 menu "General setup"

+config EXPERIMENTAL
+    bool "Prompt for developement and/or incomplete code"
+    default n
+    help
+      Some of the various things that Coreboot supports can be in a
state of development where the functionality, stability, or the level
of testing is not yet high enough fro general use.
+
 config EXPERT
 	bool "Expert mode"
 	help