[PATCH 6/6] docs: gpio: add a new document to its index.rst

[Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>]

There's now a new ReST file. Add it to the index.rst file.

Fixes: ce7a2f77f976 ("docs: gpio: Add GPIO Aggregator documentation")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 Documentation/admin-guide/gpio/index.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/admin-guide/gpio/index.rst b/Documentation/admin-guide/gpio/index.rst
index ef2838638e96..7db367572f30 100644
--- a/Documentation/admin-guide/gpio/index.rst
+++ b/Documentation/admin-guide/gpio/index.rst
@@ -9,6 +9,7 @@ gpio
 
     gpio-aggregator
     sysfs
+    gpio-mockup
 
 .. only::  subproject and html
 
-- 
2.26.2