disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/drivers/staging/fsl-dpaa2/ethsw/README
..
..
@@ -79,7 +79,7 @@
79
79
 
80
80
 For a more detailed description of the Ethernet switch device driver model
81
81
 see:
82
-	Documentation/networking/switchdev.txt
82
+	Documentation/networking/switchdev.rst
83
83
 
84
84
 Creating an Ethernet Switch
85
85
 ===========================