Sphinx reports missing toctree entry warning:

Documentation/admin-guide/hw-vuln/old_microcode.rst: WARNING: document isn't included in any toctree

Add entry for "Old Microcode" docs to fix the warning.

Fixes: 4e2c719782a847 ("x86/cpu: Help users notice when running old Intel microcode")
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
---
 Documentation/admin-guide/hw-vuln/index.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/admin-guide/hw-vuln/index.rst b/Documentation/admin-guide/hw-vuln/index.rst
index 451874b8135d8e..cf151114592790 100644
--- a/Documentation/admin-guide/hw-vuln/index.rst
+++ b/Documentation/admin-guide/hw-vuln/index.rst
@@ -23,3 +23,4 @@ are configurable at compile, boot or run time.
    gather_data_sampling
    reg-file-data-sampling
    rsb
+   old_microcode

base-commit: b43dc4ab097859c24e2a6993119c927cffc856aa
-- 
An old man doll... just what I always wanted! - Clara