docs: networking: move FDDI drivers to the hw driver section

Move docs for defza and skfp under device_drivers/fddi.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/networking/device_drivers/fddi/index.rst

+.. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+
+Fiber Distributed Data Interface (FDDI) Device Drivers
+======================================================
+
+Contents:
+
+.. toctree::
+   :maxdepth: 2
+
+   defza
+   skfp
+
+.. only::  subproject and html
+
+   Indices
+   =======
+
+   * :ref:`genindex`

Documentation/networking/device_drivers/index.rst

@@ -13,6 +13,7 @@ Contents:
    cable/index
    cellular/index
    ethernet/index
+   fddi/index
    hamradio/index
    wan/index
    wifi/index

Documentation/networking/index.rst

@@ -47,7 +47,6 @@ Contents:
    dccp
    dctcp
    decnet
-   defza
    dns_resolver
    driver
    eql
@@ -94,7 +93,6 @@ Contents:
    sctp
    secid
    seg6-sysctl
-   skfp
    strparser
    switchdev
    tc-actions-env-rules

drivers/net/fddi/Kconfig

@@ -77,8 +77,8 @@ config SKFP
 	  - Netelligent 100 FDDI SAS UTP
 	  - Netelligent 100 FDDI SAS Fibre MIC
 
-	  Read <file:Documentation/networking/skfp.rst> for information about
-	  the driver.
+	  Read <file:Documentation/networking/device_drivers/fddi/skfp.rst>
+	  for information about the driver.
 
 	  Questions concerning this driver can be addressed to:
 	  <linux@syskonnect.de>