Documentation: Move L1TF to separate directory

commit 65fd4cb65b2dad97feb8330b6690445910b56d6a upstream.

Move L!TF to a separate directory so the MDS stuff can be added at the
side. Otherwise the all hardware vulnerabilites have their own top level
entry. Should have done that right away.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jon Masters <jcm@redhat.com>
[bwh: Backported to 4.9: adjust filenames, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/Documentation/index.rst b/Documentation/index.rst
index 18b2484..f95c58d 100644
--- a/Documentation/index.rst
+++ b/Documentation/index.rst
@@ -12,7 +12,6 @@
    :maxdepth: 2
 
    kernel-documentation
-   l1tf
    development-process/index
    dev-tools/tools
    driver-api/index
@@ -20,6 +19,13 @@
    gpu/index
    80211/index
 
+This section describes CPU vulnerabilities and their mitigations.
+
+.. toctree::
+   :maxdepth: 1
+
+   hw-vuln/index
+
 Architecture-specific documentation
 -----------------------------------