[PATCH] Documentation: i2c: add i2c-sysfs into index

[Hu Haowen]

Append i2c-sysfs to toctree in order to get rid of building warnings.

Signed-off-by: Hu Haowen <src.res@xxxxxxxx>
---
 Documentation/i2c/index.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/i2c/index.rst b/Documentation/i2c/index.rst
index 8b76217e370a..6270f1fd7d4e 100644
--- a/Documentation/i2c/index.rst
+++ b/Documentation/i2c/index.rst
@@ -17,6 +17,7 @@ Introduction
    busses/index
    i2c-topology
    muxes/i2c-mux-gpio
+   i2c-sysfs
 
 Writing device drivers
 ======================
-- 
2.25.1