Documentation: remove depends on CONFIG_EXPERIMENTAL

The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

CC: Rob Landley <rob@landley.net>
CC: Jiri Kosina <jkosina@suse.cz>
CC: Masanari Iida <standby24x7@gmail.com>
CC: Jason Wessel <jason.wessel@windriver.com>
CC: Richard L Maliszewski <richard.l.maliszewski@intel.com>
CC: Gang Wei <gang.wei@intel.com>
CC: Shane Wang <shane.wang@intel.com>
CC: Harry Wei <harryxiyou@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Jason Wessel <jason.wessel@windriver.com>

Documentation/CodingStyle

@@ -546,15 +546,7 @@ config AUDIT
 	  logging of avc messages output).  Does not do system-call
 	  auditing without CONFIG_AUDITSYSCALL.
 
-Features that might still be considered unstable should be defined as
-dependent on "EXPERIMENTAL":
-
-config SLUB
-	depends on EXPERIMENTAL && !ARCH_USES_SLAB_PAGE_STRUCT
-	bool "SLUB (Unqueued Allocator)"
-	...
-
-while seriously dangerous features (such as write support for certain
+Seriously dangerous features (such as write support for certain
 filesystems) should advertise this prominently in their prompt string:
 
 config ADFS_FS_RW

Documentation/DocBook/kernel-hacking.tmpl

@@ -1184,13 +1184,6 @@ static struct block_device_operations opt_fops = {
      <filename>Documentation/kbuild/kconfig-language.txt</filename>.
     </para>
 
-    <para>
-     You may well want to make your CONFIG option only visible if
-     <symbol>CONFIG_EXPERIMENTAL</symbol> is enabled: this serves as a
-     warning to users.  There many other fancy things you can do: see
-     the various <filename>Kconfig</filename> files for ideas.
-    </para>
-
     <para>
      In your description of the option, make sure you address both the
      expert user and the user who knows nothing about your feature.  Mention

Documentation/DocBook/kgdb.tmpl

@@ -94,10 +94,8 @@
   <sect1 id="CompileKGDB">
     <title>Kernel config options for kgdb</title>
     <para>
-    To enable <symbol>CONFIG_KGDB</symbol> you should first turn on
-    "Prompt for development and/or incomplete code/drivers"
-    (CONFIG_EXPERIMENTAL) in  "General setup", then under the
-    "Kernel debugging" select "KGDB: kernel debugger".
+    To enable <symbol>CONFIG_KGDB</symbol> you should look under
+    "Kernel debugging" and select "KGDB: kernel debugger".
     </para>
     <para>
     While it is not a hard requirement that you have symbols in your

Documentation/intel_txt.txt

@@ -192,7 +192,7 @@ grub.conf needs to be modified as follows:
 
 The kernel option for enabling Intel TXT support is found under the
 Security top-level menu and is called "Enable Intel(R) Trusted
-Execution Technology (TXT)".  It is marked as EXPERIMENTAL and
+Execution Technology (TXT)".  It is considered EXPERIMENTAL and
 depends on the generic x86 support (to allow maximum flexibility in
 kernel build options), since the tboot code will detect whether the
 platform actually supports Intel TXT and thus whether any of the

Documentation/zh_CN/CodingStyle

@@ -462,13 +462,6 @@ config AUDIT
 	  logging of avc messages output).  Does not do system-call
 	  auditing without CONFIG_AUDITSYSCALL.
 
-仍然被认为不够稳定的功能应该被定义为依赖于“EXPERIMENTAL”：
-
-config SLUB
-	depends on EXPERIMENTAL && !ARCH_USES_SLAB_PAGE_STRUCT
-	bool "SLUB (Unqueued Allocator)"
-	...
-
 而那些危险的功能（比如某些文件系统的写支持）应该在它们的提示字符串里显著的声明这
 一点：